2026 Fl School Bus Specs ADA revised.pdf

FLORIDA

SCHOOL BUS SPECIFICATIONS

Effective January 1, 2026

[Page Intentionally Blank] i

TABLE OF CONTENTS

FOREWORD ............................................................................................................................................... ii

GENERAL INFORMATION AND WARRANTY PROVISIONS

SECTION I ............................................................................................................................................... I-1

TYPE A SCHOOL BUS MINIMUM CHASSIS SPECIFICATIONS ...................................................... I-2

TYPE A SCHOOL BUS OPTIONAL CHASSIS EQUIPMENT.............................................................. I-6

SECTION II ............................................................................................................................................ II-1

TYPE C AND TYPE D SCHOOL BUS MINIMUM CHASSIS SPECIFICATIONS............................. II-2

TYPE C AND TYPE D SCHOOL BUS OPTIONAL CHASSIS EQUIPMENT SPECIFICATIONS.... II-9

SECTION III ..........................................................................................................................................III-1

MINIMUM SCHOOL BUS BODY SPECIFICATIONS........................................................................III-2

SCHOOL BUS BODY EXCEPTIONS .................................................................................................III-18

OPTIONAL BODY EQUIPMENT SPECIFICATIONS.......................................................................III-19

SECTION IV ......................................................................................................................................... IV-1

POWER LIFT EQUIPPED SCHOOL BUS MINIMUM SPECIFICATIONS ...................................... IV-2

POWER LIFT EQUIPPED SCHOOL BUS OPTIONAL EQUIPMENT SPECIFICATIONS.............. IV-7

SECTION V.............................................................................................................................................V-1

AIR CONDITIONER SPECIFICATIONS...............................................................................................V-2

APPENDIX A: MINIMUM LETTERING AND LIGHTING REQUIREMENTS ................................A-1

APPENDIX B: COLORADO RACKING LOAD TEST ........................................................................ B-5

APPENDIX C: KENTUCKY POLE TEST PROCEDURES ................................................................. C-1 ii

FOREWORD

Florida School Bus Specifications are adopted as authorized under section (s.) 1006.25, Florida Statutes

(F.S.), and rule 6A-3.003, Florida Administrative Code (F.A.C.). The effective date of this edition of the

Florida School Bus Specifications is January 1, 2026.

GENERAL INFORMATION AND WARRANTY PROVISIONS

All public school buses (bodies and chassis) owned, operated, rented, leased, and contracted for by any public school board or charter school in Florida, used to transport children to and from school or school-related events, and purchased after the effective date of this document, as specified in rule 6A-3.003, F.A.C., must:

1. Meet or exceed the minimum requirements of these specifications;

2. Meet all applicable Federal Motor Vehicle Safety Standards (FMVSS); and

3. Meet or exceed the 2025 National School Transportation Specifications and Procedures (also referred to herein as the 2025 National Specifications), except when in conflict with the requirements herein. In such cases, the requirements specified in this document shall prevail.

The requirements specified herein are the minimum requirements for school buses in Florida. The date used to determine the applicability of these specifications is defined as the date the vendor receives the purchase order or signs a valid sales contract with the purchaser.

All school bus chassis and body manufacturers must certify to the Commissioner of Education, Florida Department of Education (department), by letter that all school buses offered for sale to or use by the public school systems, including charter schools, in Florida meet or exceed all standards, specifications and requirements specified herein.

Used school buses purchased or operated by a public school board or charter school in Florida must meet or exceed all federal and state requirements for public school buses that were in effect on the date the vehicle was manufactured.

Under the authority of s. 316.615, F.S., certain capacity school buses owned, operated, or leased by nonpublic schools in Florida are required to meet the specifications prescribed herein.

DEFINITIONS:

1. School Bus (State Definition): Section 1006.25, F.S., defines a “school bus” as “a motor vehicle regularly used for the transportation of prekindergarten disability program and kindergarten through grade 12 students of the public schools to and from school or to and from school activities, and is owned, operated, rented, contracted, or leased by any district school board...”

2. School Bus (Federal Definition): Title 49 CFR Part 571.3 defines “school bus” as “a bus that is sold or introduced in interstate commerce for purposes that include carrying students to and from school or related events.”

3. Multi-Function School Activity Bus (MFSAB): The state definition of MFSAB is defined by Florida school bus specifications as a school bus constructed to FMVSS and Florida school bus specifications to be used for school-related activities. MFSABs may not be used to transport students to and from school.

4. MFSAB (Federal Definition): Title 49 CFR Part 571.3 defines MFSAB as a school bus NOT used to transport students to and from home or school bus stops.

SCHOOL BUS TYPES:

1. Type A: A school bus that is constructed using a cutaway front-section vehicle with a left side driver’s door. This definition includes two classifications: Type A-1, with a Gross Vehicle Weight Rating (GVWR) of 14,500 pounds or less, and Type A-2, with a GVWR greater than 14,500 pounds and less than or equal to 21,500 pounds.

2. Type C: A school bus that is constructed using a chassis with a hood and front fender assembly. The entrance door is behind the front wheels. This type also includes the cutaway truck chassis or truck chassis with cab, with or without a left side door, and with a GVWR greater than 21,500 pounds. It is also known as a conventional school bus.

3. Type D: A school bus that is constructed using a stripped chassis. The entrance door is ahead of the front wheels.

This type bus is also known as a rear engine or front engine transit-style school bus.

MFSAB:

This can be a Type A, C, or D school bus as described above, with the following exceptions:

• Identification: The bus body shall bear the words “ACTIVITY BUS” in a contrasting color at least 8 inches high in the area where “school bus” is normally positioned. Lettering and numbering shall conform to FMVSS and Florida School Bus Specifications and shall meet reflectivity standards. The numbering on this bus may be of a contrasting color. The name of the school system shall be displayed in at least 6-inch letters on both sides of the bus in the beltline area. School or team lettering no larger than 6 inches high and logos no larger than 12 inches high may be placed below the beltline. NO additional SIGNS OR LOGOS shall be applied to any area of the bus, including the bumpers and the windows.

• Color: The local school board must determine and approve the color of the activity bus. The color scheme may use any combination of up to three colors. This combination may be in addition to an optional white roof. The color National School Bus Yellow shall not be used as a part of the color scheme. The bus wheels shall not be painted black or yellow; however, they may be painted one of the three colors selected for the bus body or may be unpainted aluminum-finished polished wheels.

• Seating: Type 2 lap/shoulder seat belts are required for all seating positions, including the driver’s seat.

• Lighting and Warning Devices: All activity buses shall meet state and federal standards for home-to-school bus lighting and warning device requirements, with the following exceptions:

1. MFSABs shall not be equipped with alternately flashing amber and red student warning signal lamps used for loading and unloading students; and

2. MFSABs shall not be equipped with stop arm signals or crossing control arms.

WARRANTIES AND PARTS AVAILABILITY FOR NEW VEHICLES:

All warranties listed herein must apply to all school buses manufactured after the effective date of these specifications and sold through the state school bus bid purchase program. Body and chassis manufacturers' warranty policies must allow revision of warranty start date for each vehicle to the actual in-service date by the school district. Appropriate forms to update chassis warranties must be included in the owner-operator's packet supplied with the chassis and must be conveyed along with the body warranty by the body builder to the district upon delivery of the completed unit. Above requirements must apply to the basic warranties, all component warranties and any extended warranties offered or required. There must be no hours-of-use limitation on any warranty required in these specifications or the associated state bid for school buses.

Manufacturers offering school bus chassis or bodies for sale in the state of Florida must make available replacement parts for said buses for a period of no less than 120 months.

The minimum labor rate for all warranty related repairs must be $75.00 per hour.

CHASSIS WARRANTIES:

1. The minimum chassis warranty shall be 12,000 miles or 12 months.

2. The standard chassis warranty for Florida school bus bids shall be 100,000 miles or 60 months.

3. Engines (including flywheel, flex plate, and harmonic balancer) on Types A, C, and D chassis must be included with both minimum chassis warranty and standard chassis warranty as described above.

4. Pricing requests will be added to the bid for the following extended engine warranty options:

a. Pricing for 60 months/150,000 miles;

b. Pricing for 60 months/200,000 miles; and

c. Pricing for 60 months/unlimited mileage.

5. Chassis frame rails, cross members, fuel tanks, front axle I-beams, and rear axle housings must be warranted for a period of 120 months, from the updated in-service date of the vehicle, 100 percent parts and labor.

6. Paint finish coats to chassis, hood, fenders, and cowl shall be warranted for 60 months/100,000 miles, 100 percent parts and labor, for adhesion, color retention, and gloss retention.

7. Color Retention: During the first 36 months from the in-service date, the color coat must not shift colors more than 4 E from the centroid, as specified in School Bus Manufacturers Technical Council (SBMTC) publication, SBMTC-008. During the 60-month warranty period, the color coat must not shift color more than 8 E from the centroid, as specified in SBMTC-008.

8. Gloss: During the first 36 months from the in-service date, the gloss reading must not fall below 60 at 60°.

During the 60-month warranty period, the gloss reading must not drop below 30 at 60°.

a. All measurements must be the average of 12 readings taken at various points on the bus, but no reading must be more than three points under the stated minimum. All readings must be taken after the bus is thoroughly washed to remove road film and dust.

BODY WARRANTIES:

1. The minimum body warranty shall be 12 months.

2. The standard body warranty for Florida school bus bids shall be for 60 months/100,000 miles, 100 percent parts and labor and shall include, but not be limited to, the following items:

a. The total air conditioner system on any bus so equipped, including parts and labor and excluding air filters used in normal preventive maintenance. Chassis engine-driven air conditioner compressor applications must be approved in writing by the engine manufacturer, who must state that the installation will not void or reduce the engine manufacturer's warranty or extended service liabilities in any way.

b. All mirror assemblies and mounting bracketry must be warranted against rust and corrosion and any reduction in clarity of view due to discoloration or other deterioration of the lens.

c. All bus body electrical wiring and switches, including, but not limited to, damage resulting from wiring or connectors becoming abraded, pierced by fasteners, shorted or otherwise damaged during manufacture or use.

d. Paint finish coats to body, hood, and cowl for adhesion, color retention, and gloss retention. Acceptable lower limits during the warranty period are as follows:

i. Adhesion: During the 60-month warranty period, paint and priming compounds must not fail to adhere to the bus with normal use and care.

ii. Color Retention: During the first 36 months of service, the color coat must not shift colors more than 4 E from the centroid, as specified in SBMTC-008. During the 60-month warranty period, the color coat must not shift color more than 8 E from the centroid, as specified in SBMTC-

008.

iii. Gloss: During the first 36 months of service, the gloss reading must not fall below 60 at 60°.

During the 60-month warranty period, the gloss reading must not drop below 30 at 60°.

iv. All measurements must be the average of 12 readings taken at various points on the bus, but no reading must be more than three points under the stated minimum. All readings must be taken after the bus is thoroughly washed to remove road film and dust.

e. All emergency exit roof hatches, including defects in material and workmanship and against leakage.

f. All passenger seat back cushions and seat frames, excluding vandalism of any exposed foam.

g. All powered entrance doors and operating and control systems.

3. Power lift warranty minimums are listed below, and are not included with the standard body warranty.

POWER LIFT WARRANTY:

A statement of warranty must be provided with each lift assuring the quality of materials and workmanship of the product for at least 36 months from the updated in-service date of the vehicle. The minimum warranty must provide

100 percent parts coverage for 36 months and 100 percent labor coverage for 12 months.

MINIMUM WARRANTY OPTIONS:

Each manufacturer or dealer may include as part of its bid package credit option allowances for districts that wish to forego the aforementioned standard and extended warranty plans and purchase the minimum/base warranty option package.

TECHNOLOGY AND EQUIPMENT, NEW:

The intent of these specifications is to accommodate new technologies and equipment that will better facilitate student transportation. New technology and equipment are acceptable for use in all vehicles if:

1. Items do not compromise the effectiveness or integrity of any major safety system. (Examples of safety systems include, but are not limited to, compartmentalization, the eight-lamp warning system, emergency exits, and the approved color scheme.)

2. Items do not diminish the safety of the bus interior.

3. Items do not create additional risk to students who are boarding or exiting the bus or are in or near the school bus loading zone.

4. Items do not require undue additional activity and/or responsibility for the driver.

5. Items generally increase efficiency and/or safety of the bus, provide for a safer or more pleasant experience for the occupants and pedestrians in the vicinity of the bus, and/or assist the driver by making his or her tasks easier to perform.

CHANGES OR CLARIFICATION OF SPECIFICATIONS:

Florida School Bus Specifications may be amended pursuant to the provisions of rule 6A-3.003, F.A.C. With the concurrence of the Florida Association for Pupil Transportation (FAPT), the School Bus Specifications Committee, and in accordance with Florida purchasing laws and the bus bid contract, the School Transportation Management

Section may, at its discretion, grant variances or exemptions and issue clarifications of these specifications, as necessary, to provide safe, efficient and cost-effective equipment to Florida school districts and charter schools and provide for advances in technology.

Questions regarding the Florida School Bus Specifications should be directed to Director, School Transportation

Management Section, Florida Department of Education, 325 West Gaines Street, Suite 834, Tallahassee, Florida

32399-0400 or may be sent via email to SCHTRANS@fldoe.org.

mailto:SCHTRANS@fldoe.org

I-1

SECTION I

I-2

TYPE A SCHOOL BUS

MINIMUM CHASSIS SPECIFICATIONS

ALTERNATOR:

Type A buses shall have a minimum 130-amp alternator. Buses equipped with an electrically powered wheelchair lift and/or air conditioning shall be equipped with the highest rated capacity available from the chassis Original

Equipment Manufacturer (OEM).

BATTERIES:

The storage battery, or batteries, shall have a minimum cold cranking capacity rating (cold cranking amps) equal to the cranking current required for 30 seconds at 0 degrees Fahrenheit and a minimum reserve capacity rating of 120 minutes at 25 amps. Higher capacities may be required, depending upon optional equipment and local environmental conditions.

BRAKE, PARKING:

On Type A chassis, the manufacturer’s standard parking brake is acceptable. On Type A chassis with hydraulic brakes, the parking brake control must be mounted for easy access by the driver. On air brake models, the control valve to set the parking brakes on the rear wheels must be dash-mounted.

BRAKES, SERVICE:

Hydraulic or air brakes are permissible.

BUMPER, FRONT:

Type A buses may be equipped with an OEM-supplied front bumper.

ENGINE EQUIPMENT:

1. A dry type air cleaner is required on all engines.

2. The engine must be equipped with full-flow, spin-on, or cartridge-type oil filter(s), with the filter header(s) mounted directly to engine.

3. An engine coolant recovery or deaeration system is required on all chassis. Type A engines must include a means to visually check the coolant level without removing the deaeration tank cap or releasing pressure from the cooling system.

4. A warning system consisting of a light and a buzzer is required on Type A chassis to notify the driver of low engine oil pressure and/or coolant overheating.

5. A fuel filtration and water separator system is required on all Type A diesel engines and must remove contaminants from the fuel prior to entry into the engine. The system must have a clear sight bowl or be equipped with a water-in-fuel light to notify technicians of the presence of water, must provide a valve for draining trapped water from the system and must include an electric or manual priming pump.

6. An engine oil pressure gauge is required. It must provide accurate, easily discernible readings across the entire operating range, from hot idle to full oil pressure. The gauge on engines with idle oil pressure that under normal conditions is low must provide a clear distinction between no oil pressure and engine idle oil pressure.

The gauge must be directly visible to the driver in the normal seated position and must not be mounted near the center of the dash where the service door control or its associated hardware could block visibility of the gauge.

7. Radiator and other engine coolant hoses supplied by the chassis manufacturer (not including heater hoses) must be constructed of silicone rubber or ethylene propylene diene monomer (EPDM) covering and aramid fiber reinforcement meeting or exceeding Society of American Engineers (SAE) standard J20R EC Class D-1. The silicone hose, if used, must include stainless steel shoe-type hose clamps or constant-torque clamps. Hoses must have markings, coloring, or other visible means of distinguishing them from the standard hoses.

8. Electric-powered configurations may be offered and are exempt from the base engine requirements listed above

I-3

ENGINE PERFORMANCE REQUIREMENTS FOR TYPE A BUSES:

Each bus must be furnished with a power train that meets or exceeds the following minimum criteria when tested at the gross vehicle weight rating (GVWR) required for a given bus capacity, and with all accessories (including air conditioner compressor(s), if equipped) on and operating:

1. Startability of 20 percent;

2. Gradeability of 5 percent at 25 miles per hour (MPH);

3. Gradeability of 1.5 percent at 50 MPH; and

4. Top speed of 70 MPH

Performance must be measured with the actual completed vehicle (i.e., with the body installed, unloaded except for the driver and one passenger). The vehicle must be in drive, with the engine at idle, the service brakes applied, the emergency brakes released, and all accessories on and operating. Measurement of acceleration time must begin at the moment the throttle is applied (the throttle is to be immediately and rapidly depressed to full throttle).

NOTE: The chassis manufacturer should use the heaviest chassis/body combination meeting these specifications for the specific bus size to determine required power train components. This test is an on-road test and will be performed using the heaviest available chassis/body, depending on body(ies) supplied. At the discretion of the department, unanticipated factors or variations in test conditions affecting performance test results that are beyond the control of the chassis manufacturer may be taken into account. A Pro Link, a diagnostic computer, or a speed wheel are also acceptable tools for this test.

Maximum acceleration time (from zero mph), under the conditions specified above, must be as follows (measured in seconds):

TEST METHOD 0-10 MPH 0-20 MPH 0-30 MPH 0-40 MPH 0-50 MPH

ACTUAL 3.4 6.2 12.0 20.0 32.2

Manufacturers may offer additional engine configurations and horsepower ratings that exceed these requirements as optional equipment.

EXHAUST SYSTEM:

The exhaust system on Type A buses must have a corrosion-resistant muffler and tailpipe. The tailpipe must exit to the left of left frame rail and behind the rear wheels. The chassis manufacturer must ensure that the exhaust design allows the exit location left of the left frame rail to be maintained after any modifications to frame length by the chassis or body manufacturer. Manufacturers must ensure that exhaust temperature exiting the tailpipe with the engine running during any normal loading or unloading activity will not produce first, second or third-degree burns on students or other individuals present. The bus must not automatically regenerate the diesel particulate filter while the bus is stationary.

FRAME SIDE MEMBERS:

Frame side members must be of one-piece construction between the front and rear spring hangers. Frame rails of

Type A chassis must have a minimum tensile strength of 50,000 pounds per square inch (PSI).

FRONT AXLE WHEEL SEALS:

All Type A buses greater than 14,500 GVWR must have oil-lubricated front axles and seals.

FUEL TANK:

The fuel tank filler spout must be located in an easily serviceable location.

I-4

HEADLIGHTS:

Headlights must meet FMVSS and SAE standards. All buses must be equipped with Full-Time Lights (FTL) meeting the following requirements:

1. With the ignition switch off, the headlights will operate normally and the FTL system will not operate;

2. With the ignition switch on or in the “accessory” position, and with the engine not running, the FTL must not operate;

3. With the ignition switch on and the engine running with the headlight switch off, the FTL system must operate, providing low-beam headlights and tail, clearance, and identification (ID) lights;

4. In all cases, the headlight switch must override the FTL system when in the “on” position;

5. This system must include a buzzer that activates if the headlight system is on with the key switch in the

“off” position.

IGNITION SYSTEM:

All buses of like chassis manufacturer must have one key, regardless of the type of key supplied to Florida purchasers.

INSULATION:

Type A chassis must include heat and noise insulation inside the bus covering the dash panel (fire wall) area to as great an extent as possible. Insulation must extend at least down to the point where the body floor connects to the fire wall, including the engine cover (doghouse), which may be insulated on the interior or exterior.

LINE-SET TICKET:

The manufacturer must include with delivery of the vehicle a line-set ticket to accurately reflect all chassis components, the Gross Axle Weight Rating (GAWR) of both front and rear axles, and the gross vehicle weight rating

(GVWR).

PAINT AND FINISH:

School bus yellow paint must meet SBMTC-008 for color and must have a finished gloss rating of at least 85 at 60°F and a distinctness of image rating of an average of at least 50, measured using the same method specified for gloss under GENERAL INFORMATION AND WARRANTY PROVISIONS. Paint must be applied for a total dry thickness of at least 1.8 mils over all painted surfaces. Trim, lettering and the bumper must be black, except that the bumper must be striped with reflective material in accordance with National School Transportation Specifications and Procedures, Revised 2025. Steel rims for all buses with hub-piloted wheels must be National School Bus Yellow and powder-coated by the rim manufacturer. Lug nuts must not be painted. All stud-piloted rims must be painted black.

STEERING:

A factory-installed tilt steering wheel/column is required.

TIRES AND RIMS:

The chassis must be equipped with radial tubeless tires and must have dual rear wheels. Type A buses greater than

14,500 GVWR must use hub-piloted disc or aluminum wheels. Tires and rims must conform to current standards of the Tire and Rim Association.

TRANSMISSION, AUTOMATIC:

An automatic transmission is required on all chassis. It shall be heavy-duty, with a minimum of four forward speeds, on all units. On Type A chassis, 30 capacity and larger, the transmission must be an Allison 1000 or 2000 or an approved equal. An external filter in the transmission oil cooler return line is required on Allison 1000 and 2000 equipped units. All Allison transmissions require OEM-approved synthetic transmission fluid and OEM filters.

Automatic transmissions incorporating a parking pawl must have a transmission shifter interlock controlled by the application of the service brake to prohibit accidental engagement of the transmission. All non-park pawl http://www.nasdpts.org/ncstonline/Documents/NCST%202015%20Specifications%20and%20Procedures%204.20.18.pdf http://www.nasdpts.org/ncstonline/Documents/NCST%202015%20Specifications%20and%20Procedures%204.20.18.pdf

I-5 transmissions must incorporate a park brake interlock that requires the service brake to be applied to allow release of the parking brake.

Any requests for transmission substitutions must be approved in writing by the purchasing district and the department’s School Transportation Management Section.

VOLTAGE CONTROL:

The voltage regulator must be solid state (transistorized) and readily accessible for service. A voltmeter with a graduated scale is required.

WARRANTIES:

See required warranties under GENERAL INFORMATION AND WARRANTY PROVISIONS.

WIRING HARNESS:

The wiring must be rated for 100 amps load and include complete wiring for the tail and stop lights. It must be designed with color coding for circuits. The fuse box door, if equipped, must have a positive latch.

I-6

TYPE A SCHOOL BUS

OPTIONAL CHASSIS EQUIPMENT

AIR-SPRUNG REAR SUSPENSION SYSTEM:

There shall be an option for an air-ride or approved equivalent air-sprung rear suspension system, when available.

Rear shock absorbers are also required with this option, as on standard suspension systems.

AUTOMATIC TRANSMISSION WARRANTY:

There shall be an option for extension of the transmission warranty to 5 years, unlimited mileage, 100 percent parts and labor. Also see GENERAL INFORMATION AND WARRANTY PROVISIONS.

COLLISION MITIGATION:

There shall be an option for passive and/or active electronic collision mitigation system(s), if available.

ELECTRIC SCHOOL BUS (ESB):

This specification is for new electric school buses only and does not allow for the modification of any existing school bus.

COMPLIANCE WITH FMVSS:

All electric systems shall be in full compliance with all applicable FMVSS and all Society of Automotive

Engineers standards that are applicable at time of manufacture.

ADDITIONAL REQUIREMENTS:

CHARGING:

1. Charging connection point shall be outside the passenger compartment.

2. While charging, the transmission/propulsion system shall be rendered inoperative.

3. Shall have AC or DC charging capabilities with standard SAE J1772 CCS1 connector.

4. Shall be V2G (Vehicle to Grid) capable.

ELECTRIC POWER SOURCE (BATTERY):

1. Shall not be located in or accessible from the interior of the school bus.

2. Shall be designed to prevent the passenger compartment from becoming energized.

3. All batteries shall be designed to prevent any dangerous fluids or fumes from entering the passenger area.

4. There shall be a disconnect switch or device to shut-off the high voltage components at the power source in the event of a crash.

5. Battery packs shall be liquid cooled.

6. Battery and electrical drive component warranty shall be a minimum of 5 years/100,000 miles

HEATING:

Heaters shall be capable of heating the passenger and driver’s compartments.

INSTRUMENT DISPLAY:

The instrument display panel must also contain an indicator showing the state of charge (power and/or range).

MARKINGS:

1. The outer layer of insulation or wiring conduit for drive system high-voltage wiring shall be industry standard orange color.

2. All high-voltage components shall be labeled with a “high voltage” marking/warning.

I-7

3. An electric vehicle identifying label shall be affixed on the right rear corner of the bus body. An additional label shall be applied to the right side of the bus rearward of the entrance door and to the left side of the bus aft of the driver's window.

POWER DISCONNECT:

1. A power disconnect device or switch shall be provided.

2. This disconnect device or switch shall be clearly marked.

3. If located inside a compartment, the compartment shall be clearly marked.

4. This device or switch shall not be in or accessible from the passenger area.

5. There shall be a label affixed near the battery disconnect switch to identify its location for first responders.

POWER REGENERATION:

When the unit is in motion and the driver removes his/her foot from the accelerator, power regeneration occurs.

PROPULSION SYSTEM /DRIVETRAIN

1. Shall be of sufficient power and torque to propel the vehicle fully loaded up to at least 60 mph and no more than 70 mph.

2. The propulsion system may be mounted using a drivetrain or positioned in a way to provide power to the wheels.

3. All propulsion systems must be contained below the floor line and cannot come into contact with the road surface.

4. Propulsion system warranties shall be a minimum 5 years/100,000 miles.

SEATING:

All seats shall be mounted to minimize contact with batteries and underside of the bus if seat replacement is necessary.

SOUND GENERATION:

All electric school buses shall comply with FMVSS 141 and produce a constant sound level for pedestrian alert while in motion under 20 mph.

LOW-PROFILE RADIAL TIRES:

There shall be an option for all-wheel-position, highway-ribbed, low-profile, tubeless radial tires of size, and load range meeting Tire and Rim Association Standards for the required GAWRs.

SPARE DISC WHEEL:

There shall be an option for a spare disc wheel, which must be same size and type as the original rims.

STABILITY CONTROL:

There shall be an option for electronic stability control meeting the minimum requirements of FMVSS No. 136, if available.

STRAIGHT FLOOR CHASSIS:

There shall be an option for Type A chassis to accept straight floor bodies (i.e., bodies with no wheel wells). This type chassis must have a combination of axles, suspension, tires, wheels, and axle stops that ensures that the maximum upward travel of the rear suspension in normal straight-ahead driving does not protrude above the top of the frame rails.

TOW HOOKS OR TOW EYES:

There must be two subcategories for this option: (1) two heavy-duty front tow hooks or tow eyes (each hook or eye must be installed by the chassis manufacturer in an approved manner to each frame rail); and (2) two heavy-duty rear tow hooks or tow eyes (each hook or eye must be installed by the chassis manufacturer in an approved manner to each frame rail).

I-8

II-1

SECTION II

II-2

TYPE C AND TYPE D SCHOOL BUS

MINIMUM CHASSIS SPECIFICATIONS

ALTERNATOR:

Types C and D chassis with internal combustion engines shall be equipped with a heavy-duty alternator having a minimum output rating of 200 amps or higher, and should produce a minimum current output of 50 percent of the rating at engine idle speed.

Buses equipped with an electrically powered wheelchair lift and/or air conditioning shall have a minimum alternator output of 240 amps and may be equipped with a device that increases the engine idle speed when the voltage drops to, or below, a pre-set level.

BATTERIES:

The storage batteries shall have minimum cold cranking capacity rating (cold cranking amps) equal to the cranking current required for 30 seconds at 0 degrees Fahrenheit and a minimum reserve capacity rating of 120 minutes at 25 amps. Higher capacities may be required, depending upon optional equipment and local environmental conditions.

BRAKE, PARKING:

On hydraulic brake models, a parking brake is required, with the control mounted for easy access by the driver. On air brake models, a dash-mounted control valve to spring-set the parking brake on the rear wheels is required.

BRAKES, SERVICE:

Hydraulic brakes are acceptable on 29-35 capacity Type C buses. Air brakes are required on all Type C buses larger than 41 capacity, and all Type D front and rear engine buses.

BUMPER, FRONT:

Types C and D buses must have a front bumper that is black, of full width channel type, and a minimum of 8 inches wide (vertically). The bumper must have sufficient structural and mounting strength to ensure that the front of the vehicle can be lifted by means of an air bumper-type jack, without permanent deformation of the bumper, brackets, or chassis frame rail(s).

ENGINE EQUIPMENT:

1. Electric-powered configurations may be offered and are exempt from the base engine requirements listed below.

2. Diesel engines must be available in at least one of the following two configurations:

a. Parent bore type block; in-line 6-cylinder design; minimum 6.4 liters displacement.

b. Wet sleeve type block; in-line 6-cylinder design; minimum 6.4 liters displacement.

NOTE: Additional engines of other configurations or displacements, including gasoline, propane and CNG (not in lieu of the above), meeting all other requirements listed herein may be offered, subject to approval by the department. Electric-powered configurations may be offered and are exempt from the engine requirements listed below.

3. A dry type air cleaner is required. An air filter restriction indicator is required on diesel engines. The restriction indicator must incorporate a system that does not allow unfiltered air into the engine if the indicator cracks or breaks.

4. The engine must be equipped with a full-flow, spin-on or cartridge-type oil filter(s), with the filter header(s) mounted directly to engine.

5. An engine coolant recovery or deaeration system is required on all chassis. Diesel engines must include a means for visually checking the coolant level without removing the deaeration tank cap or releasing pressure from the cooling system.

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6. A warning system consisting of a light and a buzzer is required on gasoline, propane, CNG, and diesel-powered chassis to notify the driver of low engine oil pressure and/or coolant overheating.

7. A fuel filtration system with a water separator is required on diesel engines and must remove contaminants from the fuel prior to entry into the engine. The system must have a clear sight bowl or be equipped with a water-in-fuel light to notify technicians of the presence of water, must provide a valve for draining trapped water from the system, and must include an electric or a manual priming pump.

8. An engine oil pressure gauge and a coolant temperature gauge are required. The oil pressure gauge must provide accurate, easily discernible readings across the entire operating range, from hot idle to full oil pressure. Gauges on engines with idle oil pressure, which under normal conditions is low, must provide a clear distinction between no oil pressure and engine idle oil pressure. Gauges must be directly visible to the driver in the normal seated position and must not be mounted near the center of the dash where the service door control or associated hardware could block visibility of the gauges.

9. Radiator and other engine coolant hoses supplied by the chassis manufacturer (not including heater hoses) must be constructed of silicone rubber or ethylene propylene diene monomer (EPDM) covering and aramid fiber reinforcement meeting or exceeding SAEJ20R EC Class D-1. Silicone hose, if used, must include stainless steel shoe-type hose clamps or constant-torque clamps. Hoses must have markings, coloring or other visible means of distinguishing them from standard hoses.

10. Manufacturers must use the largest capacity oil pan available for each engine configuration in order to achieve the longest duration oil change interval.

ENGINE PERFORMANCE REQUIREMENTS:

Each bus must be furnished with a power train that meets or exceeds the following minimum criteria when tested at the GVWR required for a given bus capacity, and with all accessories (including air conditioning compressor(s), if equipped) on and operating:

1. Startability of 20 percent;

2. Gradeability of 5 percent at 25 miles per hour;

3. Gradeability of 1.5 percent at 50 miles per hour; and

4. Minimum top speed of 60 miles per hour.

NOTE: The chassis manufacturer should use the heaviest chassis/body combination meeting these specifications for the specific bus size to determine required power train components. This test is an on-road test and will be performed using the heaviest available chassis/body, depending on body or bodies supplied. At the discretion of the department, unanticipated factors or variations in test conditions affecting performance test results that are beyond the control of the chassis manufacturer may be taken into account. A Pro Link, a diagnostic computer or a speed wheel are also acceptable tools for this test.

Maximum acceleration time (from zero mph), must be as follows (measured in seconds): Performance must be measured with the actual completed vehicle (i.e., with body installed, unloaded except for the driver and one passenger). The vehicle must be in drive, with the engine at idle, the service brakes applied, the emergency brakes released, and all accessories on and operating. Measurement of acceleration time must begin at the moment the throttle is applied (the throttle is to be immediately and rapidly depressed to full throttle).

29-77 Capacity Types C and D:

TEST METHOD 0-10 MPH 0-20 MPH 0-30 MPH 0-40 MPH 0-50 MPH

ACTUAL 3.4 6.2 12.0 20.0 32.2

78-90 Capacity Type D:

TEST METHOD 0-10 MPH 0-20 MPH 0-30 MPH 0-40 MPH 0-50 MPH

ACTUAL 3.7 7.1 12.0 20.0 32.2

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Manufacturers may offer additional engine configurations and horsepower ratings that exceed these requirements as optional equipment.

EXHAUST SYSTEM:

The exhaust system must have a corrosion-resistant muffler and tailpipe. The tailpipe must exit to the left of left frame rail and behind the rear wheels. Manufacturers must ensure that exhaust temperature exiting the tailpipe with the engine running during any normal loading or unloading activity will not produce first, second, or third-degree burns on students or other individuals present. The bus must not automatically regenerate the diesel particulate filter while the bus is stationary. Also see Section III, Electrical Equipment and Wiring.

FRAME SIDE MEMBERS:

Frame side members must be of one-piece construction between the front and rear spring hangers. Frame rails must have a minimum tensile strength of 50,000 pounds per square inch (PSI).

FRONT AXLE LUBRICATION:

All buses must have oil-lubricated front axle hubs, providing an externally visible means of checking the lubricant level.

HEADLIGHTS:

Headlights must meet FMVSS and SAE standards. All buses must be equipped with Full-Time Lights (FTL) meeting the following requirements:

1. With the ignition switch off, the headlights will operate normally and the FTL system will not operate.

2. With the ignition switch on or in the “accessory” position, and with the engine not running, the FTL must not operate.

3. With the ignition switch on and the engine running with the headlight switch off, the FTL system must operate, providing low-beam headlights and tail, clearance and identification (ID) lights.

4. In all cases, the headlight switch must override the FTL system when in the “on” position.

5. This system must include a buzzer that activates if the headlight system is on with the key switch in the

“off” position.

HOOD:

Engine hood on Type C buses must not require more than 20 pounds of force to open or close.

IGNITION SYSTEM:

All ignition switches must be keyed alike. All buses of like chassis manufacturer and type must have one key.

Note: Local district policy may supersede this requirement.

INSULATION:

Type C chassis must include full width and height heat and noise insulation on the inside or outside of the bus covering the dash panel (firewall) area to as great an extent as possible and at least up to the top of the firewall and down to the point that the body floor connects to the firewall, including the engine cover (doghouse). Type D Front Engine buses must include complete heat and noise insulation of the doghouse area.

LINE-SET TICKET:

Manufacturer must include with delivery of vehicle a line-set ticket to accurately reflect all chassis components, GAWR of both front and rear axles, and GVWR.

PAINT AND FINISH, TYPES C and D CHASSIS:

School bus yellow paint must meet SBMTC-008 for color and must have a finished gloss rating of at least 85 at 60°F and a distinctness of image rating of an average of at least 50 measured using the same method specified for gloss under GENERAL INFORMATION AND WARRANTY PROVISIONS. Paint must be applied for a total dry thickness of at least 1.8 mils over all painted surfaces. Trim, lettering and bumper must be black, except that bumper must be striped with reflective material in accordance with National School Transportation Specifications and http://www.nasdpts.org/ncstonline/Documents/NCST%202015%20Specifications%20and%20Procedures%204.20.18.pdf

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Procedures, Revised 2025 and Procedures or these specifications. Steel rims must be powder-coated, National School

Bus Yellow, by the wheel manufacturer. Lug nuts must not be painted.

NOTE: MFSAB is excluded from the school bus yellow color requirement of this section; however, all other paint rating requirements shall apply. See MFSAB requirements under GENERAL INFORMATION AND WARRANTY

PROVISIONS beginning on page 1.

RADIATOR FILLER TUBE:

The radiator filler must be located for ease of service from the engine compartment on Type C and Type D rear engine buses. It must be located for ease of service from outside the bus on Type D front engine buses.

STABILITY CONTROL:

Electronic stability control meeting the minimum requirements of FMVSS No. 136 is required.

STEERING:

A tilt steering wheel/column is required.

TIRES AND RIMS:

Chassis must be equipped with radial tubeless tires mounted on aluminum or hub-piloted disc wheels. Tires and rims must conform to current standards of the Tire and Rim Association (see Chassis Specifications Charts for sizes). See

PAINT AND FINISH for wheel color information.

TRANSMISSION, AUTOMATIC:

An automatic transmission is required on all chassis as specified:

1. Type C 29-47 capacity, Allison PTS 2100, 5-speed or Ford 6R140, 5-speed or approved equal.

2. Type C 65-78 capacity, Allison PTS 2500, 5-speed or Ford 6R140, 5-speed or approved equal.

3. Type D 71 capacity front engine, Allison PTS 2500, 5-speed or approved equal.

4. Type D 78-89 capacity front engine, Allison PTS 2500, 5-speed or approved equal.

5. Type D 72 capacity rear engine, Allison PTS 2500, 5-speed or approved equal.

6. Type D 78-89 capacity rear engine, Allison PTS 3000, 6-speed or approved equal.

All requests for transmission substitutions must be approved in writing by the purchasing district and by the department’s School Transportation Management Section.

Allison PTS 2000 series transmissions must include an external spin-on type, vertically mounted transmission fluid filter. The shifter must be dash- or console-mounted and must be either a T-handle or push-button design.

Allison PTS 3000 series transmissions must have at least 5 speeds enabled for front engine Type D and 6x speeds for rear engine Type D.

All transmissions require synthetic or OEM approved equal transmission fluid and must use OEM filters.

Automatic transmissions incorporating a parking pawl must have a transmission shifter interlock controlled by the application of the service brake to prohibit accidental engagement of the transmission. All non-park pawl transmissions must incorporate a park brake interlock that requires the service brake to be applied to allow release of the parking brake.

WIRING HARNESS:

All chassis electrical wiring must conform to current standards of the Society of Automotive Engineers, be coded by color, and be insulated and completely encased in convoluted loom or equivalent protective wrapping. In locations that prevent such looming, wires must be properly held in place by appropriate fasteners at intervals necessary to prevent possible damage to wire insulation. The fuse box door, if equipped, must have a positive latch. All chassis http://www.nasdpts.org/ncstonline/Documents/NCST%202015%20Specifications%20and%20Procedures%204.20.18.pdf

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electrical circuits must be fused per the requirements of FMVSS. Buses using multiplexed electrical systems may meet the intent of these specifications without the use of specified equipment, subject to approval by the department.

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TYPE C CHASSIS:

Maximum Design (Passenger) Capacity 29LT 29 47 65 71 77

Front Axle Weight Rating (pounds) 5,000 6,000 7,000 9,000 10,000 10,000

Rear Axle Weight Rating (pounds) 10,000 13,000 15,000 19,000 19,000 20,000

Cowl to axle, minimum (inches) 123 123 162 229 250 250

Tires – minimum size, Load Range; tubeless-radial ply*

225R-19.5F 10R-22.5-F 11R-22.5-G 11R-22.5-G 11R-22.5-G 11R-22.5-G

Disc wheels – minimum rim width (inches) 6.75 7.5 8.25 8.25 8.25 8.25

Hub-piloted disc wheels for tubeless radial tires 6 stud, 5 hand hold

6 stud, 5 hand hold

10 stud, 2 hand hold

10 stud, 2 hand hold

10 stud, 2 hand hold

10 stud, 2 hand hold

Minimum size fuel tank (gallons) 30 30 60 60 60 60

Allison transmission series (# of forward gears)

** Must include park pawl.

PTS 1000 or

2200 (5)** PTS 2100 (5) PTS 2100 (5) PTS 2500 (5) PTS 2500 (5) PTS 2500 (5)

TYPE D FORWARD CONTROL FRONT ENGINE:

Maximum Design (Passenger) Capacity 71 77 83 89

Front Axle Weight Rating (pounds) 10,800 12,000 12,000 12,000

Rear Axle Weight Rating (pounds) 17,000 19,000 21,000 23,000

Tires – minimum size, Load Range acceptable* 11R-22.5G 11R-22.5G 11R-22.5-G 11R-22.5-G

Hub-piloted disc wheels-10 stud, minimum rim width (inches)

8.25, 2 hand hold

8.25, 2 hand hold

8.25, 2 hand hold

8.25, 2 hand hold

Minimum size fuel tank (gallons) 60 60 60 60

Allison transmission series (# of forward gears) PTS 2500 (5) PTS 3000 (5) PTS 3000 (5) PTS 3000 (5)

An automatic transmission is required on all chassis. See TRANSMISSION, AUTOMATIC for required specifications.

Maximum overall length of the bus must not exceed 45 feet, bumper to bumper.

*Low-profile tubeless radial tires of size and load range meeting Tire and Rim Association Standards for the required GAWRs may be approved in lieu of standard conventional tubeless radial tires.

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TYPE D REAR ENGINE CHASSIS SPECIFICATIONS CHART:

Maximum Design (Passenger) Capacity 72 78 84 90

Front Axle Weight Rating (pounds) 11,000 12,000 12,000 12,000

Rear Axle Weight Rating (pounds) 19,000 21,000 23,000 23,000

Tires – minimum size, Load Range acceptable * 11R-22.5-G 11R-22.5-G 11R-22.5-G 11R-22.5-G

Hub-piloted disc wheels-10 stud, minimum rim width (inches) 8.25, 2 hand hold 8.25, 2 hand hold 8.25, 2 hand hold 8.25, 2 hand hold

Minimum size fuel tank (gallons) 60 60 60 60

Allison transmission series (# of forward gears) PTS 2500 (5) PTS 3000 (6) PTS 3000 (6) PTS 3000 (6)

Maximum length of vehicle must not exceed 45 feet, bumper to bumper.

*Must meet Tire and Rim Association Standards. Low-profile tubeless radial tires of size and load range meeting Tire and Rim Association Standards for the required GAWRs may be approved in lieu of standard conventional tubeless radial tires.

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TYPE C AND TYPE D SCHOOL BUS

OPTIONAL CHASSIS EQUIPMENT SPECIFICATIONS

AIR-SPRUNG FRONT SUSPENSION SYSTEM:

There shall be an option for an air-ride or approved equivalent air-sprung front suspension system, when available.

Front shock absorbers are also required with this option, as on standard suspension systems.

AIR-SPRUNG REAR SUSPENSION SYSTEM:

There shall be an option for an air-ride or approved equivalent air-sprung rear suspension system, when available.

Rear shock absorbers are also required with this option, as on standard suspension systems.

ALTERNATOR, HIGHER OUTPUT:

There shall be an option for alternators having a minimum of 270 amps hot-rated output.

COLLISION MITIGATION:

There shall be an option for passive and/or active electronic collision mitigation system(s), if available.

ELECTRIC SCHOOL BUS (ESB):

This specification is for new electric school buses only and does not allow for the modification of any existing school bus.

COMPLIANCE WITH FMVSS:

All electric systems shall be in full compliance with all applicable FMVSS and all Society of Automotive

Engineers standards that are applicable at time of manufacture.

ADDITIONAL REQUIREMENTS:

CHARGING:

1. Charging connection point shall be outside the passenger compartment.

2. While charging, the transmission/propulsion system shall be rendered inoperative.

3. Shall have AC or DC charging capabilities with standard SAE J1772 CCS1 connector.

4. Shall be V2G (Vehicle to Grid) capable.

ELECTRIC POWER SOURCE (BATTERY):

1. Shall not be located…