Attachment F4 - Fed Std 833K Items 220A-232A Types C and D Front Engine Work Bus Basic.pdf

Federal Standard 833K Items 220A-232A, Types C and D Front Engine Work Bus Basic

FED STD 833K

SEPTEMBER 2, 2015

FEDERAL STANDARD

BUSES: TYPES C and D FRONT ENGINE WORK

BUS, BASIC, SUPPORT TEXT

TYPES “C” and “D” FRONT ENGINE WORK BUS BASIC

2.0 Scope and Classification

2.1 Scope

This Standard covers commercial Types “C” and “D” front engine buses.

The buses specified herein are school bus type construction.

This Standard is intended to simplify competitive procurement of commercial vehicles, and achieve a practical degree of standardization within the federal fleet.

The Government takes no exemptions to the laws and regulations for vehicles used on public roads and highways.

2.2 Application

This Standard does not include all varieties of the commodity indicated by the title but is intended to cover those vehicles generally acquired by the Government. Buses with standardized components and equipment are highlighted in this Standard. A selection of coded optional additional systems and equipment are included for agencies, divergent geographic and operational related needs.

2.3 Coverage of Bus Types

The types of buses covered by this standard are listed below. Optional equipment appears in section 3.25. The item descriptions, minimums, options, and manufacturer data can be viewed on the web www.gsa.gov/automotive. Click on the link for all standards and refer to Fed Std 833, Items 220A-232A, Types C and D Front Engine Work Bus Basic.

2.4 Classifications

The individual bus configuration classifications are referred to by a Standard Item Number (SIN) The SINs covered by this specification are as follows:

220A- 28 Adult, Type C, Work Bus 221A- 36 Adult, Type C, Work Bus 222A- 40 Adult, Type C, Work Bus 230A- 32 Adult, Type D Front Engine, Work Bus 232A- 44 Adult, Type D Front Engine, Work Bus

2.0 Applicable documents

The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues in effect are those cited in the solicitation or contract.

The documents listed in this section are specified in sections 3, 4, or 5 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as examples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirements of documents cited in sections 3, 4, or 5 of this specification, whether or not they are listed.

2.1 Federal Specifications

A-A-393A Commercial Item Description Extinguishers, Fire, Dry-Chemical (Hand-Portable)

2.2 ADA Transportation Vehicle Accessibility Guidelines (ADA) 36 CFR Part 1192

1192.25 Doors, steps and thresholds

1192.29 Interior circulation, handrails and stanchions

1192.31 Lighting

1192.39 Destination and route signs

2.3 Federal Motor Vehicle Safety Standards (FMVSS) 49 CFR Part 571

571.101 Controls and Displays

571.102 Transmission Shift Lever Sequence, Starter Interlock, and Transmission Braking Effect

571.103 Windshield Defrosting and Defogging Systems

571.104 Windshield Wiping and Washing Systems

571.108 Lamps, Reflective Devices, and Associated Equipment

571.111 Rearview Mirrors

571.113 Hood Latch Systems

571.119 New Pneumatic Tires for Vehicle Other Than Passenger Cars

571.120 Tire Selection and Rims for Vehicles other than Passenger Cars

571.121 Air Brake Systems

571.124 Accelerator Control Systems

571.205 Glazing Materials

571.207 Seating Systems – Standard applies to the driver’s seat only

571.208 Occupant Crash Protection - Standard applies to the driver’s seat only

571.209 Seat Belt Assemblies - Standard applies to the driver’s seat only

571.210 Seat Belt Assembly Anchorages - Standard applies to the driver’s seat only

571.213 Child Restraint Systems – Standard applies to vehicles with an integral child safety seat

571.217 Bus Emergency Exits and Window Retention and Release

571.220 School Bus Rollover Protection

571.221 School Bus Body Joint Strength

571.222 School Bus Passenger Seating and Crash Protection

571.225 Child Restraint Anchorage Systems

571.301 Fuel System Integrity

571.302 Flammability of Interior Materials

571.303 Fuel System Integrity of Compressed Natural Gas Vehicles

571.403 Platform Lift Systems for Motor Vehicles

571.404 Platform Lift Installation in Motor Vehicles

2.4 Federal Motor Carrier Safety Regulations (FMCSR) 49 CFR Part 393

393.11 Lighting devices and reflectors

393.19 Requirements for turn signaling systems

393.20 Clearance lamps to indicate extreme width and height

393.22 Combination of lighting devices and reflectors

393.23 Lighting devices to be electric

393.24 Requirements for headlamps and auxiliary road lighting lamps

393.25 Requirements for lamps other than head lamps

393.26 Requirements for reflectors

393.28 Wiring to be protected

393.29 Grounds

393.30 Battery installation

393.31 Overload protective devices

393.40 Required brake systems

393.41 Parking brake system

393.42 Brakes required on all wheels

393.44 Front brake line, protection

393.45 Brake tubing and hose, adequacy

393.46 Brake tubing and hose connections

393.47 Brake lining

393.50 Reservoirs required

393.51 Warning devices and gauges

393.52 Brake performance

393.53 Automatic brake adjusters and brake adjustment

393.55 Antilock brake systems

393.61 Window construction

393.62 Window obstructions

393.63 Windows, markings

393.65 All fuel systems

393.67 Liquid fuel tanks

393.69 Liquefied petroleum gas systems

393.77 Heaters

393.78 Windshield wipers

393.79 Defrosting device

393.81 Horn

393.88 Television receivers

393.89 Buses, driveshaft protection

393.90 Buses, standeeline or bar

393.92 Buses, marking emergency doors

393.94 Interior Noise Level in Power Units

393.95 Emergency equipment on all power units

2.5 Non-Government standards and other publications

2.5.1 Society of Automotive Engineers (SAE) Standards and Recommended Practices

J163 Low Tension Wiring and Cable Terminals and Splice Clips J198 Windshield Wiper Systems- Trucks, Buses, and Multipurpose Vehicles J381 Windshield Defrosting Systems Test Procedure and Performance Requirements- Trucks, Buses, and Multipurpose Vehicles J551 Performance Levels and Methods of Measurement of Electromagnetic Compatibility of Vehicles, Boats (up to 15m), and

Machines (50 Hz to 18 GHz) J516 Hydraulic Hose Fittings J537 Storage Batteries J561 Electrical Terminals-Eyelets and Spade Type J575 Test Methods and Equipment for Lighting Devices and Components for Use on Vehicles Less Than 2032 MM in Overall With J588 Turn Signal Lamps for Use on Motor Vehicles Less than 2032 mm in Overall Width J589 Turn Signal Switch J673 Automotive Safety Glasses J686 Motor Vehicle License Plates J695 Turning Ability and Off Tracking-Motor Vehicles J844 Nonmetallic Air Brake System Tubing J910 Hazard Warning Signal Switch J1127 Battery Cable J1128 Low Tension Primary Cable J1149 Metallic Air Brake System Tubing and Pipe J1292 Automobile, Truck, Truck-Tractor, Trailer, and Motor Coach Wiring J1318 Gaseous Discharge Warning Lamp for Authorized Emergency, Maintenance, and Service Vehicles J1350 Selection and Application Guidelines for Diesel, Gasoline, and Propane Fired Liquid Cooled Engine Pre-Heaters J1489 Heavy Truck and Bus Retarder Downhill Performance Mapping Procedure J1908 Electrical Grounding Practice J2064 R134a Refrigerant Automotive Air-Conditioning Hose J2188 Commercial Truck and Bus SAE Recommended Procedure for Vehicle Performance Prediction and Charting

2.5.2 American Society of Heating, Refrigeration and Air-Conditioning Engineers (ASHRAE)

A03 Handbook, Chapter 9, Surface Transportation 37 Methods of Testing for Rating Unitary Air-Conditioning and Heat Pump Equipment

41.1 Standard Methods for Temperature Measurement

41.2 Standard Methods for Laboratory Airflow Measurement

41.3 Standard Method for Pressure Measurement

2.5.3 American Trucking Association, Inc.

Technology and Maintenance Council (TMC) RP 803

2.6 Order of Precedence

In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence.

Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained.

3.0 Requirements

a. Chassis manufacturer, intermediate stage vehicle converter, and final stage manufacturer, as applicable, shall be registered with the National Highway and Traffic Safety Administration (NHTSA).

b. The bus shall be complete with all the necessary operating components, features, and accessories customarily furnished for commercial sale, whether stipulated herein or not.

c. Buses and furnished accessories shall comply with all applicable Federal Motor Vehicle Safety Standards and the Federal Motor Carrier Safety Regulations listed in section 2.4 applicable on the date of manufacture.

d. All standards and specifications listed in Section 2 shall apply with the only exceptions being those in conflict with FMVSS standards.

e. Only one body length / model number vehicle shall be furnished for each Standard Item Number (SIN).

f. Buses furnished shall meet or exceed this Specification. All deviations to this Standard must be directed in writing to the

GSA Procurement officer assigned to the bus program.

g. Options are defined in Paragraph 3.25. Option codes are selected by the purchaser to meet agency needs. An Option cited in a purchase order, is a requirement to be provided under a contract.

h. Information for this Standard and Items can be viewed on the web www.gsa.gov/automotive. Click on the link for all standards and refer to Fed Std 833.

3.1 Body and Chassis

The body and chassis furnished shall be no older than the manufacturer’s current production at the time of vehicle manufacture.

3.1.1 Passenger Capacities

Standard Item Number (SIN) Adult Capacity (Seated)

SIN 220A 28 adults SIN 221A 36 adults SIN 222A 40 adults SIN 230A 32 adults SIN 232A 44 adults

3.1.2 Body Construction

The following FMVSS requirements shall apply to all buses furnished under this standard unless otherwise amended herein:

571.214 571.220 571.221

3.1.3 Body Fastener Application

All fasteners shall be corrosion resistant.

3.1.4 Body Structure

Wood shall not be used for structural framing.

3.1.5 Body Integrity

a. The body, floor, roof, and panel joints shall be water and airtight.

b. All body seams shall be sealed and not permit dust or fume entry into passenger compartment.

c. Body, hinge, and, mirror mounting points shall be reinforced to prevent cracking, fastener, or fastener device pull out.

3.1.6 Body Exterior Lengths

Overall length measurements indicated in AutoStandards shall be from the rear most to front most body or component surface.

Length measurement shall include bumpers. Only one body length shall apply to each Standard Item.

3.1.7 Body Exterior Width

This measurement shall be taken from the exterior vertical body surface of the primary body skin panel.

3.1.8 Body Exterior

a. Exterior sidewalls shall comply with FMVSS 571.221.

b. Tires shall not protrude beyond exterior body sidewall.

c. Composite rubber fender extensions can be used to cover tire edge.

3.1.9 Rain Splash Control

Rain gutters, hoods, or lips shall be provided to prevent water from the roof flowing onto the passenger doors, side windows, and the door boarding area.

3.1.10 Passenger Compartment Interior Dimensions

Interior height as measured from the floor to center peak of ceiling. Measurement minimum shall be maintained between the first and last vertical roof bows.

3.1.11 Insulation

All bus and chassis manufacturers supplied insulation shall comply with FMVSS 571.302

3.1.12 Maintenance

a. The design of the bus and optional equipment shall permit access for routine servicing and shall permit access for replacement and adjustment of component parts and accessories with minimal disturbance of other components and systems.

b. Interior hinged and fastener-secured access panels and doors for maintenance:

1. Shall use common tools to open and be flush with the surrounding materials.

2. Shall be sealed to prevent entry of fumes and water into passenger compartment.

3.1.13 Body Mounting

a. Cushion material shall be utilized between body and frame. Body can be floated but shall not include wooden spacer blocks.

b. Reinforcements or filler blocks shall be used where mounting devices might otherwise deform frame flanges.

c. Mounting devices shall utilize fasteners that will minimize loosening but which may require regular scheduled tightening.

Interface of chassis and body, including all electrical, fluid, mechanical systems, and mounted equipment shall be in full accordance with the chassis manufacturer’s “Body Builders Book” and published equipment technical data.

3.1.14 Sound Level

Interior sound level when measured in accordance with FMCSR 393.94.

3.1.15 Corrosion Protection

a. All hardware shall be corrosion resistant.

b. Fastener materials shall be compatible with materials being fastened.

c. No bare metal permitted.

d. All joints and connections of dissimilar metals shall be insulated to minimize effects of galvanic corrosion.

3.1.16 Undercoating

Underbody, fenders, skirts, and wheelwells shall be undercoated. The exceptions to this requirement are plastic or polymer exterior parts not subject to deterioration or damage from road splash and debris such as one piece hoods and fender well extensions

3.1.17 Mud Flaps

Rubber composition mud flaps at all wheel ends shall extend to within 3 to 7 inches off the ground when suspension is at normal operating height and at curb weight.

3.1.18 Curb Weight

The curb weight shall include the weight of the chassis and body with all attachments, accessories, standard and optional equipment, a full complement of fuel, lubricants, coolants.

3.1.19 Payload and Gross Vehicle Weight

The payload weight for adult passengers shall be calculated using 215 pounds per person and 215 pounds for the driver. These ratings include provisions for parcels and shall be considered an even weight distribution throughout the body. Wheelchair positions shall be calculated using 300 lbs. for each wheelchair position specified. When a wheelchair position includes convertible seating, the 215 pounds per seated person shall be included in the calculation instead of the wheelchair position weight.

3.1.20 Capacity Decal

An instruction decal shall be applied to the forward bulkhead visible to all passengers and driver. The lettering shall be not less than 1-1/2 inch in height and in strong contrast to the interior background color. The message can be in a single line or two lines and must state “No Standees Permitted” or “No Standees” and “Maximum Passenger Capacity XX” or “Capacity XX Passengers”.

The two X’s shall represent the passenger capacities specified as standard and optional. Multiple decals can be used to accommodate this requirement with one displaying the no standees instruction statement and another displaying passenger capacity.

3.1.21 Towing Devices

a. Front and rear towing devices shall be furnished. Front devices can deleted if the chassis manufacturer’s incorporates a frame crush zone that prohibits attachment of the towing devices.

b. If the bus cannot be lifted with the furnished hooks or loops without damaging body panels or frame, a warning label shall be permanently affixed to the frame area immediately next to the towing devices and clearly visible to tow truck operator during recovery procedures. Warning label shall be in high contrast to its surrounding to provide immediate recognition. The warning label shall read in bold letters no smaller than ¼ inch, “DO NOT LIFT BUS WITH TOW EYES. TOW EYES FOR

FLAT GROUND MANEUVERING ONLY.”

c. Complete towing instructions shall be furnished with the operator's manual.

d. Rear towing device(s) shall not provide a toehold for unauthorized riders

3.2 Air Pollution Control

The vehicle and engine shall confirm to 40 CFR Subchapter C-Part 86- “Control of Emissions from New and In-use Highway Vehicles and Engines,” as evidenced by an EPA certificate of compliance. Vehicles shall also comply with all pollution control requirements for the State of final destination. Certificates of compliance shall be made available upon request.

3.3 Engines

Engine horsepower and torque ratings shall be the engine manufacturer’s advertised values.

3.3.1 Cooling System

a. Cooling system shall be charged with extended life coolant.

b. All coolant hoses and lines shall meet or exceed the requirements of SAE J20.

c. All hoses and lines shall be securely attached with constant-tension, or thermoplastic clamps. Hoses and lines shall not be permitted to rub components that may eventually lead to a coolant leak.

d. Hoses and lines shall not be supported by wire ties or straps.

e. Passenger compartment heater hoses shall be equipped with full-flow, quarter-turn valves located in a protected location to permit complete shutoff of engine coolant flow to heating units. The location of the valves shall be indicated with a label stating the purpose of the valves such as “Heater Shutoff Valves” and located to be visibly obvious.

3.3.2 Engine Compartment

a. Engine compartment shall be readily accessible for servicing and routine maintenance of engine and engine components.

b. All fluid locations shall be accessible with standard funnels, pour spouts, and automatic dispensing equipment.

c. All lubricant sumps shall be fitted with magnetic-type external, drain plugs if available from the component manufacturer as standard or optional.

3.4 Engine Accessories

3.4.1 Air Cleaner

Air restriction indicator included in the engine intake air system.

3.4.2 Automatic Engine Idle Shutdown

Engine shall shutdown automatically after a 300 second idle period when the transmission is in the neutral position. Shutdown command can be overridden when the air conditioning is switched to on.

3.4.3 High-Idle Control

Automatic engine high-idle control shall:

a. Be preset to operate at an elevated rate not to exceed the maximum rate permitted by engine manufacturer.

b. Operate (engage) when switched to the “ON” position, the parking brake applied, and the transmission in “NEUTRAL” or

“PARK” (applicable to design furnished).

c. Operate (engage) when the air conditioning is operating and the transmission in “NEUTRAL” or “PARK”. High idle speed shall not rely on manual on/off switch position to elevate idle. A low voltage sensing controller can be used to accommodate this requirement in lieu of immediate idle up when A/C is activated.

d. Disengage when the parking brake is released, service brake pedal is depressed or transmission in-gear position is selected.

e. Transmission shall not be allowed to engage until engine has returned to low idle speed setting.

f. Control shall be chassis manufacturer furnished when available as standard/ optional equipment or supplied as aftermarket when approved by the GSA.

3.4.4 Hour Meter

All buses shall be equipped with hours of operation readout readily accessible without the use of special equipment and located in the dash panel or in the engine compartment.

3.5 Transmission

3.5.1 Automatic Transmission

Transmission shall be automatic with a minimum of 5 forward speeds. Transmission fluid shall be synthetic if available from OEM. Allison transmissions shall be equipped with TES-295 approved synthetic fluid. Transmission shall be labeled on its exterior to indicate the type of fluid installed.

3.6 Brakes

3.6.1 Service Brakes

a. Chassis OEM Antilock Brake System shall be furnished.

b. Dust shields shall be furnished for all drum brake assemblies.

3.6.2 Air Brakes

The brake system, complete with all necessary components shall include:

a. Air Storage Tanks – shall be appropriately rated for application and mounted in such a way to maintain drains at the lowest point for proper water evacuation.

b. Automatic Moisture Ejector – the first air storage tank (wet tank) after the air dryer shall be equipped with a heated, automatic, moisture-ejector. All other air tanks shall be equipped with a brass or stainless steel, ¼-turn ball valve drain. The moisture ejector shall be protected from debris damage or accumulation by shielding.

c. Air Dryer with replaceable, spin-on cartridge, desiccant air dryer; Meritor Model SS1200 or Bendix AD-IP shall be furnished on all air systems and installed per compressor and air dryer manufacturer’s recommendations.

3.7 Axles

a. GVWR - the GVWR (Gross Vehicle Weight Rating) and individual axle GAWR (Gross Axle Weight Rating) shall not be exceeded when loaded with the specified number of passengers and baggage including the driver.

b. GAWR calculation shall reflect maximum weight ratings as advertised by axle manufacturer and no higher rating of components shall be acceptable.

3.7.1 Drive Axle

a. The vehicle maximum road speed shall be electronically governed between 68 and 75 mph.

b. Differential and bearing lubrication shall be synthetic grease/fluid.

c. A metal display tag shall be added to the differential fill plug indicating synthetic fluid.

3.7.2 Driveshaft

Driveshaft protection shall comply with FMCSR 393.89

3.7.3 Front Axle

a. Wheel bearings and axle spindles shall be oil lubricated with a window for visual determination of oil level on non-drive axles or “Lubed for Life” permanently sealed unitized hubs shall be provided.

b. Bearing lubrication shall be synthetic grease/fluid.

c. A metal display tag shall be added to hub indicating synthetic fluid requirement. The tag is not required for unitized hubs with non-serviceable bearings.

3.8 Electrical

3.8.1 Electrical System

a. Shall comply with SAE J163, J561, J589b, J910, J1127, J1128, J1292, FMCSR 393.28, 393.29, 393.31,

b. All electrical and electronic components, including, but not limited to: switches, connectors, terminal strips, relays, circuit breakers, fuses, fusible links, lamps, indicators, appliances, etc. shall be clearly identified and shown in as-built wiring diagrams and schematics to be furnished and provided with each bus order. This information can be supplied by electronic means as well as in paper copy. When information is made available via electronic format all necessary program downloads shall be provided at no charge with no limit to service life.

c. All wires shall be color-coded or permanently marked no less than every 6-inches the entire length of the wire for identification with easily read numbers and/or letters and routed in Nylon-6 split-loom. Multi-conductor cabling does not need to be covered in split loom. Ground wires may be outside loom but must be supported and secured.

d. All wires and cables furnished by chassis and bus manufacturer shall be stranded high-temperature crosslinked polyethylene insulation.

e. The use of ribbon cables are permitted only when used in the interior of control modules and computers.

f. All wiring (including grounds), connecting terminals, relays, and switches shall be rated to carry at least 120 percent of the maximum ampere load for which the circuit is protected.

g. No more than three ground wires or cables are permitted per grounding stud.

h. All grounding locations shall be accessible for inspection and repair.

i. In addition to grounds rated to carry the full load, RF grounding of the bus body shall be furnished to the chassis with a minimum 19 mm (3/4"), braided and tinned, ground strap with soldered ends that are secured to clean metal surfaces, with star washer, on the body and frame and sealed with non-hardening, battery terminal type sealer.

j. Electrical system shall incorporate master panels for current limiting devices and other electronic devices and be located in areas that provide easy access but not require underbody access or removal of other components for inspection and service of components contained within. No current limiting devices or relays shall be located outside of electrical panels. The only exceptions to this requirement are the fuses and relays that are specifically specifically required to be located inside battery box by the powered component manufacturer . and those that are an integral part of a large component or device

k. All overcurrent protection devices shall be securely mounted, easily removable, and readily accessible for inspection, replacement, resetting if required, and service.

l. All wiring between the chassis and body shall be connected to terminal strip(s), block(s), or multi-pin connector(s) and all shall be readily accessible for checking and service. All connections interior and exterior susceptible to moisture exposure shall be sealed. Wiring harness junctions shall use multi-pin water tight connectors.

m. The body and accessory electrical equipment shall be interfaced to chassis in accordance with chassis manufacturer’s recommendations.

n. All electrical loads shall be disconnected from battery power when the ignition is in the off position. Loads required to be powered under FMVSS, memory functions, and those operated by momentary contact switches may remain powered.

o. All wiring shall be installed in a manner that does not stress the conductor, insulation, terminal ends, connectors, appliances or switches and provides enough slack at terminal ends to allow for the removal of light assemblies and other components for repair.

p. All unnecessary additional wire length shall be removed. The exception to this requirement is allowed when prescribed resistance is required in wire length by interconnected components and controls or a predestined wiring harness that cannot be easily or commonly shortened to the appropriate length. When this exception applies, excess length shall be neatly wrapped and secured to prevent damage or abrasion during use.

q. All electrical components and wiring shall be accessible through panels that are installed to facilitate easy removal and servicing.

r. All lights or powered components mounted on hinged covers or doors shall have a flex loop secured at both ends to allow for normal opening of cover without damaging wires

s. All wiring harnesses shall be in protected locations and kept at least 15 cm (6 in.) away from exhaust system components unless properly protected by a heat shielding.

t. All wiring harnesses shall be rigidly supported at distances not greater than 20-inches by one or more of the following to prevent sagging and movement which results in abrasion, chafing, pinching, snagging, or any other damage. All plastic materials shall be UV resistant and metal supports corrosion resistant:

i. P-clamps– Clamps shall be corrosion resistant with a neoprene, Viton, or silicone insulator.

ii. Saddle-supports – Formed metal support with smooth radius edges designed to carry no less than twice the weight of the harness it supports.

iii. Cable clamps – Die-formed, radius-edge, corrosion-resistant metal cable clamps and can only be used in bus interior or engine compartment in areas not subject to wetting by rain or road spray. Plastic clamps can only be used in areas not exposed to heat that could exceed their working limits.

iv. Button-cable ties – Saddle Mounts with heavy-duty cable ties (Hellerman-Tyton T250 or equivalent) are an acceptable method of securing chassis and body wiring and hoses. Cable ties shall be UV resistant and have minimum width of ½” and 250 lb tensile strength.

u. All apertures in vehicle shall be grommeted for passing wiring through. Exception to this requirement:

i. If surface mount light fixture is centered over a hole in body skin no less than 3/4 inch in diameter and the hole has been die punched with a radius edge painted or coated completing a smooth edge incapable of abrading wire. No drilled or bored holes are acceptable for this exception.

ii. All body penetrations shall be sealed with an elastomer sealing compound if grommeting alone cannot provide a tight seal against the entry of water, fumes, or dust into the passenger compartment.

iii. Electrical circuit board panels and components that are susceptible to accidental contact shall have a protective cover, shield, or enclosed/dedicated compartment to prevent accidental shorts that can result in injury, fire, or damage to the electrical system.

v. All electric motors shall be turned off and the audio visual equipment sound output silenced by a single switch located in easy reach of the driver and labeled to the affect of “Noise Cancel”.

3.8.2 Alternator

a. The maximum alternator RPM rating shall not be exceeded at the top governed engine RPM

b. The alternator shall be sized to carry the worst case load with transmission in gear, engine at idle as described herein:

a. Air Conditioner fans operating at maximum speed

b. Air Conditioning Compressor clutch turned on.

c. All interior and exterior lights on

d. Starting batteries at ¾ to full state of charge

e. Alternator housing temperature at 200 degrees Fahrenheit or higher

3.8.3 Batteries

a. Shall comply with FMCSR 393.30 and SAE J537

b. Batteries shall be mounted in a fully enclosed box on a self-draining roll-out tray made of stainless steel or other materials intrinsically resistant to damage or corrosion due to battery acid exposure and capable of supporting the full weight of the batteries without assistance.

c. Tray shall roll out sufficiently to allow for complete visual inspection and service of terminals without removing battery cables.

d. Minimum of three, Group 31, maintenance-free batteries

e. The total reserve capacity rating and the total cold cranking ratings at O degrees F, both measured in accordance with SAE

J537, shall be not less than that required by the engine manufacture for starting at zero degrees Fahrenheit.

f. All components within the battery compartment shall be protected from battery electrolyte and gas corrosion.

g. Only battery cables shall be connected to batteries.

h. Battery cables shall be routed through dedicated holes in battery box independent of each other and insulated from abrasion by grommets.

i. No spliced battery cables permitted. Cables shall be one-piece, stranded-conductor with protective covering (jacket) pigmented red to indicate positive and black to indicate negative and shall be run from the positive battery terminal of the leading battery directly to the starter solenoid.

3.8.4 Auxiliary Interior Power Receptacle

a. Shall be 12-volt powered with 10 amp minimum supply located in the driver’s area.

b. Receptacle shape shall be similar to cigar lighter.

3.8.5 120-Volt Shore Power

a. All powered components requiring alternating current (ac) shall operate on 120-volt (v), 60 Hz. The power inlet connector shall be polarized and of the grounding type and shall be listed as suitable for the purpose. The power inlet connector shall be in a weatherproof housing with a spring-loaded and gasket sealed cover. The inlet connector shall be constructed and installed to guard against inadvertent contact by persons with parts made live. The inlet connector shall be provided with a grounding pole with a first to make and last to break contact. The supply equipment shall have sufficient rating to supply the load served.

b. All electrical and heating materials shall be listed or labeled by a Nationally Recognized Testing Laboratory - i.e.:

UL/CSA/ETL and shall be installed in accordance with both the manufacturers’ instructions and the National Electrical Code.

c. 120 Volt Shore Power is included with all powered optional components

3.9 Fuel

3.9.1 Fuel System

a. Shall comply with FMCSR 393.65, FMCSR 393.67, and FMCSR 393.69

b. A manual fuel priming pump for recharging fuel system after filter changes shall be furnished when available from the OEM chassis manufacturer or engine manufacturer and located for easy access and service.

c. All diesel engines shall be furnished with a fuel/water separator with the following attributes:

i. Replaceable filter element or cartridge rated no larger than 30 microns.

ii. Drain valve that allows for water and debris to be drained from lowest point of unit.

iii. Water sensor for warning light.

iv. The separator can be remote mounted or internal to the engine.

3.9.2 Fuel Tank(s)

a. When the tank filler cap is located behind body skin, a hinged access door shall be furnished.

b. Fuel fill(s) shall permit filling of tank(s) with only the nozzle end of the fuel handle.

c. Fuel filler cap(s) shall be attached with a cable or chain to prevent loss.

d. Fuel type shall be indicated on the body skin immediately next to fill cap or on the inside face of the fuel fill door. The words “Ultra Low Sulfur Diesel” must be included when applicable.

3.10 Exterior

3.10.1 License Plates

Front and rear license plate mounting provisions shall be furnished and comply with SAE J686.

3.10.2 Other Plates and Decals

Dealer identification decals and placards shall not be applied to vehicle exterior. Bus manufacturer decals are permitted so long as they do not interfere with other required or specified markings.

3.10.3 Exterior Paint

a. The standard exterior color of buses shall be bright white unless otherwise specified by option in paragraph 3.25.

3.11 Doors and Windows

3.11.1 Passenger Doors

a. Passenger door shall comply with ADA requirements.

b. Shall be manufacturers standard

c. Shall comply with FMVSS 217.

3.11.2 Keys

All exterior access panels to the engine compartment, battery compartment, doors, and storage compartments shall be keyed. All locks of similar design shall be keyed alike. Passenger entry and exit doors can be electronically or mechanically locked.

Duplicate keys shall be furnished with each bus.

3.11.3 Steps

Shall be covered with standard commercially acceptable material

a. Shall comply with ADA guidelines.

b. Galvanized steel, stainless steel, or aluminum can be used to construct the passenger stepwell.

c. The material chosen for the stepwell construction must be compatible with the surrounding body structure.

d. Square vertical leading edge of stepwell shall have a flat surface to provide a positive seal where doors contact stepwell or otherwise provide a positive seal for doors to prevent intrusion of water, dirt, wind, etc.

3.11.4 Emergency Exits

a. Emergency exits shall comply with FMVSS 217.

b. The following minimum number of emergency exits shall be furnished:

1. SIN 220A - rear exit door, a minimum of one roof hatch, and a minimum of one emergency exit window per side.

2. SIN 221A – rear exit door, a minimum of two roof hatches, and a minimum of two emergency exit windows per side.

3. SIN 222A – rear exit door, a minimum of two roof hatches, and a minimum of two emergency exit windows per side.

4. SIN 230A - rear exit door, a minimum of one roof hatch, and a minimum of one emergency exit window per side.

5. SIN 232A - rear exit door, a minimum of two roof hatches, and a minimum of two emergency exit windows per side.

c. Emergency doors shall be indicated by a red lamp visible to passengers but that does not reflect or cause glare on inside of windshield.

3.11.5 Passenger Windows

a. Shall comply with FMCSR 393.61, 393.62, 393.63, FMVSS 217, and FMCSR393.92.

b. Provided with fingertip control, permitting ready opening and adjustment to various desired openings.

c. Rattle proof and, when closed, waterproof and windproof.

d. Driver’s window(s) shall open to permit use for signaling and ventilation.

e. All windows shall be fitted with latching devices.

a. Tinting

a. Chassis manufacturer’s tinted windshield shall be furnished.

b. Windows on the bus sides and in the rear door shall be tinted a neutral color, complementary to the bus exterior.

3.11.6 Windshield Defrosting

Shall comply with FMVSS 571.103, FMCSR 393.79, and SAE J381

3.11.7 Sun Visors

Adjustable sun visors shall be provided for windshield and all windows in driver’s area.

a. Visor adjustment shall not require the use of hand tools

b. Finger hold type knobs shall be installed on all fasteners needed to make position adjustments

3.11.8 Windshield Wiping and Washing

a. Shall comply with FMCSR 393.78, and SAE J198

b. Wiper and washer shall be electrically powered

3.12 Lights and Lighting

3.12.1 Exterior Lighting

a. All exterior lights on the bus shall comply with ADA 1192.31, FMCSR 393.11, 393.19, 393.22, 393.23, 393.24, 393.25, 393.26, ans SAE J589, J910.

b. All exterior lights shall be grounded with an insulated wire.

c. The ground lead shall not be secured by the lamp fixture mounting screws or hardware.

d. A terminal shall be attached to the wires by a simple mechanical crimp-type process that conforms to SAE J163.

e. Ground terminal lugs shall be solder plated, cadmium, tin or zinc plated.

f. Ground terminals should be clustered and shall be accessible for servicing.

g. A serrated paint-cutting terminal shall be utilized to make proper contact when used on painted surfaces.

h. When two wire lights are not commercially available, then ground return connections may be made to vehicle structure, frame or engine using the ground-return system (one wire systems per SAE J1292).

i. Lights and reflectors shall not be mounted on rub rails or vehicle bumpers unless recess protected.

j. All lights or powered components mounted on hinged covers or doors shall have a flex loop secured at both ends to allow for normal opening of cover without damaging wires.

k. Clearance lamps shall be low-profile design or body recessed to prevent damage from tree limbs. Armor shields shall not be supplied to protect lighting unless supplied commercially as standard equipment.

l. All buses shall be equipped with an auxiliary side marker/ turn signal combination lamp positioned below the passenger windows, forward of the side midpoint, to the rear of the passenger door and driver’s side window.

m. All exterior housings of lamps, switches, electronic devices, and fixtures shall be corrosion resistant and weatherproofed.

3.12.2 Interior Lighting

a. Bus manufacturer’s standard equipment domelights equaling not less than one lamp per seated row.

b. Minimum of one domelight over the driver area controlled independently of other interior lighting with a separate switch.

c. Interior illumination shall meet or exceed requirements of ADA 1192.31.

3.13 Electronics/Audio Visual

3.13.1 Radio

a. AM/FM Compact-Disc combination radio shall be furnished.

b. Minimum of two flush mount speakers shall be provided for every 3 rows of seats.

3.14 Interior

3.14.1 Air Conditioning System

a. The system capacity must be calculated as follows: (1) add together all evaporator capacities, (2) add together all condenser capacities, (3) add all compressor capacities. The BTUH capacity stated must be the lowest added value. Dash air conditioning system must be added to the passenger compartment lowest added value and considered part of the total Air Conditioning Output listed in the Minimums for each Standard Item.

b. Bus manufacturer’s highest output BTU system shall be furnished as standard.

c. The system shall be electronically controlled and have the capability of self diagnostics.

1. Evaporator fan speed control and thermostat setting shall be digital and located in driver area.

2. Minimum diagnostic outputs and system protections shall include high pressure, low pressure, and clutch or unloader cycling

c. Automatic tensioning compressor drive belt(s).

d. All air shall pass through the evaporator filter system.

e. Condensation drains shall be sufficient to evacuate all water accumulated in evaporator and prevent standing water.

f. All system components subject to corrosion from moisture shall be aluminum, copper, stainless steel, galvanized, or epoxy coated.

g. Condenser(s) can be skirt or roof mounted as standard .

h. Evaporators can be free-blow, ducted, or a combination to attain an even air flow and temperature environment.

i. The compressor input RPM must not be exceeded at full engine RPM.

j. The air conditioning system must have refrigerant moisture indicating sight glass incorporated into the system and located to be readily viewable.

a. Air Conditioning Installation

a. System components shall not interfere with or adversely affect chassis OEM and bus body systems, components, function, reliability, and fit.

b. Installation of the evaporator(s) and ancillary equipment inside the vehicle shall be mounted away from the head impact zone as specified in FMVSS 222.

c. System shall be installed on the assembly line in accordance with the A/C manufacturer’s documented instructions.

d. All lines, hoses, cables, wires, and harnesses shall be rigidly supported at distances not greater than 20-inches. Cable ties or straps of any kind shall not be used to support any lines or hoses. UV-resistant cable ties are acceptable only for bundling.

e. All line, hose, cable and wires shall pass-through grommeted holes.

f. All body penetrations shall be sealed with an elastomer sealing compound if grommeting alone cannot provide a tight seal against the entry of water, fumes, or dust into the passenger compartment.

g. All mounting hardware shall be stainless steel or other corrosion resistant materials.

h. No sheet metal screws shall be used in mounting equipment within contact of hoses.

i. System charging and monitoring access ports shall be located in areas where they will not be subject to damage from foreign objects while bus in motion. Ports shall be readily accessible without the need to remove components or permanently secured panels.

b. Air Conditioning Performance

The BTUH capacities shall be based upon the SAE individual component ratings including compressor, evaporator, condenser, and all ancillary refrigeration components.

a. The evaporator shall be tested at 80 degrees F dry bulb/ 67 degree F wet bulb in 37 degrees F saturated evaporating refrigerant temperature versus air entering the evaporator.

b. Condenser shall be tested at 95 degrees F with saturated refrigerant temperature as 45 degrees delta T.

The following test must be used to validate air-conditioning performance:

a. The bus must be heat soaked to 100 degree F for not less than two hours in a controlled environment prior to testing.

b. A relative humidity of 50% shall be maintained in the test chamber during testing.

c. The system must cool the interior of the bus from 100 degrees F to 70 degree F in no more than 30 minutes with the engine at an elevated RPM and all standard components of the bus and climate control system installed during the test.

d. Interior temperature must be measured at not less than three points inside the bus along the centerline and located four feet above the floor.

e. The minimum three points of measure shall be (1) three feet above the center pint of the horizontal driver seat surface,

(2) at the longitudinal midpoint of the body, and (3) three feet forward of the rear wall.

f. The temperature probes inside the bus must be within +/- 3 degrees F of the average temperature at the conclusion of the test except for Forward Control Front Engine Buses. On FCFE Buses the probe in the driver area shall be considered in compliance when the temperature drop from 100F is at least 20 degrees to allow for engine compartment heat emission.

3.14.2 Heating

Passenger compartment heating shall be provided using heat exchangers integrated into the air conditioning system or by auxiliary coolant-to-air heat exchangers with integral mounted fans to provide circulation in addition to the integral dash system. When heating is not incorporated into the air conditioning system it shall include a minimum of two heat exchangers with one mounted in proximity of the rear wall and a second nominally mid ship.

3.14.3 Stowage Compartment

The bus manufacturer’s largest forward bulkhead compartment shall be furnished. Compartment shall be used to store the fire extinguisher, and safety triangles. If both components will not reasonably fit, GSA Engineering will determine a suitable location in conjunction with the manufacturer during the first production vehicle inspection.

3.14.4 Driver’s Area

Driver’s area shall include as a minimum:

a. Shall comply with FMCSR 393.51

b. All switches and controls shall be marked with easily read identifiers

c. Ignition switch

1. Push button start is acceptable as long as the power supply to the switch is controlled by a keyed switch or electronic recognition.

d. Tilt and telescoping steering wheel/column

e. Engine coolant temperature overheat warning

f. Low coolant level warning

g. Engine low oil pressure indication

h. Fuel level indicating guge

i. Water-in-fuel warning light

j. Engine hour meter

k. Transmission selector

l. Transmission overheat warning

m. Air pressure gauge and warning buzzer

3.14.5 Interior Mirror

Minimum of one non-glare type mirror shall be mounted inside the bus with a reflective surface area of not less than 80 square inches with rounded corners. Driver shall be able to view complete passenger compartment through interior mirror.

3.15 Floor

3.15.1 Floor Construction

a. Interior sub-floor shall be metal, covered with plywood,

b. All wood and wood product ends shall be sealed and securely fastened to the metal stringers prior to being covered with matting.

c. All floor fasteners shall be of corrosion resistant materials.

d. All surfaces exposed to weather shall be coated with a waterproofing substance such as undercoating or epoxy surfacers.

3.15.2 Floor Coverings

a. The under seat floor area shall be covered with Manufacturers standard grey or black color matting.

b. The aisle and the entrance area shall be covered with Manufacturers standard ribbed matting, grey or black color.

3.15.3 Wheelhousings

Wheelhousings, which protrude into the passenger compartment, shall be covered with the same matting used under the seats or a material equal in durability as the flooring material. The wheelhouse shall be designed in shape and strength so it may be used as a footrest.

3.16 Walls

Standard interior walls shall be painted white to light grey. The area below the windows shall be covered with textured metal galvanized steel or aluminum.

3.17 Ceiling

Standard ceiling panels shall be manufacturers standard. .

3.18 Seats

3.18.1 Driver’s Seat

Driver’s seat shall be air ride with grey fabric and include the following features:

a. Back Recline

b. Seat Tracks

c. Right moveable arm rest

d. Seat height adjust

e. 3 point belt system

3.18.2 Passenger Seats

a. Seating and leg room requirements –

1. Hip-to-knee room measured from the front of one seat back horizontally across the highest part of the seat to the seat or panel immediately in front, at the center of the seat, shall be no less than 27-inches. At all seating positions in paired forward facing seats immediately behind other seating positions hip-to-knee room shall be no less than 27-inches.

2. Foot room, measured at the floor forward from a point vertically below the front of the seat cushion to an obstruction such as the driver barrier, shall be no less than 12 inches. Seats immediately behind the wheel housings may have foot room reduced, provided the wheelhouse is shaped so that it may be used as a footrest.

3.19 Safety

3.19.1 Bumpers

a. Front and rear bumpers shall be manufacturer’s standard l

b. Bumpers shall not contact body

c. Bumpers shall be painted or e-coated on all sides prior to installation.

d. Back surface of bumper can be epoxy primed in the absence of top coating if not visible during normal operation.

3.19.2 Stanchions, Barriers and Grab Rails

a. Barrier panels shall be furnished between the stepwell and the passenger seats and immediately behind the driver’s area.

b. The installation of the driver’s barrier shall not interfere with the full reward motion of the driver’s seat.

c. ADA compliant hand rails are required at the front and rear of the passenger entrance shall be arranged to safely assist passengers entering or leaving the bus

d. All stanchions and grab rails shall be ADA compliant stainless steel, epoxy coated, or padded injection-foam covered tubing.

If padded tubing is used, the foam must meet all FMVSS requirements and be vandal resistant transit quality material.

Opaque barriers shall be covered with the same material as the wall covering unless formed from injection molded plastic.

e. All stanchions, barriers and grab rails shall be attached to tapping plates in walls, floor and ceiling if no structural members are available.

3.19.3 Emergency Equipment

a. Shall comply with FMCSR 393.95

b. Fire extinguisher mounted convenient to the driver.

i. The fire extinguisher shall have an Underwriter’s Laboratory rating of 2A 10 B:C or greater, shall be a minimum 5 pounds, shall have a hose, shall include a metal safety pin and wire, and shall conform to type I or type II, class 2, size 5 of A-A-393.

ii. The fire extinguisher shall permit visual determination of charge.

c. Minimum of 10-unit type first-aid kit shall be furnished.

3.20 Suspension

3.20.1 Gross Vehicle Weight Ratings

a. Vehicle GVWR’s shall be the chassis manufacturer’s published ratings.

b. Component and vehicular ratings shall not be increased to meet the requirements of this Specification.

c. When published ratings are not available, verification of rating shall be made available upon request by the Government.

3.21 Tires and Wheels

3.21.1 Tires

Tubeless, steel belted radial tires with highway tread and a minimum speed rating of 75 mph.

3.21.2 Wheels

a. Wheel/Tire size and ply rating shall be the same for all wheels/tires.

b. Shall be manufacturer’s standard color

3.22 Miscellaneous

3.22.1 Operation, Parts, and Service Manuals

Operation, Part, and Service manuals shall be furnished with each bus. Parts and Service manuals may be in electronic format.

3.22.2 Servicing and Adjusting

a. Prior to acceptance of the vehicle by the Government, the Contractor shall inspect, service and adjust each vehicle for operational use in accordance with an approved manufacturer’s prescribed pre-delivery servicing form.

b. The areas to be inspected and adjusted, if necessary, shall include as a minimum:

1. Alignment of headlights.

2. All engine adjustments.

3. Electrical and brake systems.

4. Filling and charging of batteries.

5. Alignment of front wheels.

6. Inflation of all tires.

7. Complete lubrication of body, chassis, engine and running gear with grade of lubricants recommended for the ambient air temperature at the delivery point.

8. Servicing of the cooling system with a solution of ethylene glycol type antifreeze and water in equal parts by volume.

9. Servicing of the windshield washer reservoir with water and appropriate additives.

3.23 Reserved