Chp234B_052017.pdf

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Code Enforcement Vehicle Abatements
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2023-GEN-0341
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Sacramento County, San Francisco City, California

About this file

The document is a California Department of California Highway Patrol (CHP) Tow Truck Inspection Guide (CHP 234B, Revision 5-17), which provides a comprehensive inspection checklist for tow trucks across four distinct vehicle classes (A, B, C, and D). The two-page form is designed to systematically evaluate tow trucks against California Vehicle Code requirements and specific equipment specifications, with areas to mark pass (P) or fail (F) for various vehicle components and safety features.

The inspection guide details precise equipment requirements for each tow truck class, including minimum gross vehicle weight rating (GVWR), boom ratings, wire rope specifications, safety chain standards, and required supplemental equipment like steering wheel securement devices, snatch blocks, and tie-down mechanisms. The document also includes a section for calculating Maximum Lifting Capacity (MLC) using a formula that considers front axle weight, wheelbase, and overhang, which helps determine the appropriate vehicle classification. The form is intended to ensure tow trucks meet stringent safety and operational standards before being permitted to operate in California.

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STATE OF CALIFORNIA

DEPARTMENT OF CALIFORNIA HIGHWAY PATROL

TOW TRUCK INSPECTION GUIDE

CHP 234B (Rev. 5-17) OPI 061

Destroy Previous Editions Chp234B_0419.pdfPage 1 of 2

AREA NUMBER COMPANY LEGEND

P = Pass F = Fail

CA NUMBER DOT NUMBER

YEAR MAKE MODEL LICENSE NUMBER VIN

GVWR EQUIPMENT TYPE (CHECK APPROPRIATE BOX)

CONVENTIONAL UNDERLIFT TRUCK HITCH WHEEL LIFT CAR CARRIER

REQUIREMENTS FOR ALL CLASSES

P F P F

CALIFORNIA VEHICLE CODE REQUIREMENTS

Current Registration Headlights Beam Indicator Tail Lamps License Plate Lamp Stop Lamps Extension Lights Backup Lamps (1969+) Reflectors, Rear Reflectors, Front and Side (1968+) Turn Signals Clearance Lamps (>80" Wide) Amber Warning Lights Warning Devices (Reflectors) Service Brakes

4000 CVC

24400 CVC

24408 CVC

24600 CVC

24601 CVC

24603 CVC

24605 CVC

24606 CVC

24607 CVC

24608 CVC

24951 CVC

25100 CVC

25253 CVC

25300 CVC

26311 CVC

Parking Brake Windshield Windshield Wipers Mirrors Horn Exhaust System Fuel Cap Tire Tread Fenders/Mud Guards Broom Shovel Fire Extinguisher 4B, C Rating Safety Chains Signs

26451 CVC

26700 CVC

26706 CVC

26709 CVC

27000 CVC

27150 CVC

27155 CVC

27465 CVC

27600 CVC

27700 CVC

27700 CVC

27700 CVC

29004 CVC

27907 CVC

Flashlight Wrecking Bar (Large Pry Bar) Six (6) 30-Minute Flares or 6 Reflectorized Cones, Min. 12" Ht.

Trash Cans & Absorbent (4 Gallon Minimum) Shop Rags or Paper Towels Shop to Truck Communications (Cell phones / 2-way radio) Approved Fuel Containers (Classes A and B) if carried Booster Battery or Hot Box

Hydraulic Jack Tire Changing Equipment Rubber Mallet / Hub Cap Tool (Classes A and B) Lockout Tools (Classes A and B) Motorcycle Straps (Class A) Sledge Hammer (Classes B, C, and D) Tool Kit Reflective Safety Attire

Manufacturer Rating Plates Controls Labeled Wrecker Boom Assembly Wheel Lift Assembly Body and Towing Equipment Mounting Bolts Winch Rating: Boom Capacity:

Wrecker Controls Throttle Control (if Equipped) Hydraulic Rams, Hoses, Valves Cable Sheaves Recovery Chain

Pivot Pin Wheel Lift Tie Down Safety Straps or Chains

"L" Arms Claw

Tow Sling Assembly (Check for bent inner tubes) Sling Pads

Carrier Bed Frame Bed Hinges

Bed Safety Lock Slide Pads

SERVICE AND OTHER EQUIPMENT

TOWING EQUIPMENT

WHEEL LIFT

CONVENTIONAL

CAR CARRIER

Loading Bridle

COMMENTS

INSPECTED BY (NAME & I.D. NUMBER) DATE TOW OPERATOR'S SIGNATURE

TOW TRUCK INSPECTION GUIDE

CHP 234B (Rev. 5-17) OPI 061

Destroy Previous Editions Chp234B_0419.pdfPage 2 of 2

TOW TRUCK EQUIPMENT SPECIFICATIONS (By Class)

P F P F

CLASS A

Minimum 14,000 Pound GVWR Chassis 4-Ton Boom Rating One 4-Ton Snatch Block Tow Dolly (with wheel tie down straps) Steering Wheel Securement Device 100' 3/8" 6 x 19 Wire Rope or OEM Specifications

Tow Sling "Minimum" 3,000 Pounds (if equipped) Tow Chains "Minimum" 5/16" Grade 70 with J/T Hooks Two (2) Safety Chains 5/16" Alloy or OEM Specifications Wheel Lift Rating - Extended 3,000 Pounds Two (2) Crossbeams, (1) 4"X4"X60" and (1) 4"X4"X48"(Minimum)

CLASS A CAR CARRIER

Minimum 19,000 Pound GVWR Chassis 50' 3/8" 6 x 19 Wire Rope or OEM Specifications Loading Bridle with J/T Hooks

4 Safety Chains 5/16" Grade 70 or Rated Nylon Straps w/Ratchets Adequate Crossbeams or Ramping Material

CLASS A CAR CARRIER TWO VEHICLE

Minimum 23,500 Pound GVWR Chassis Loading Bridle with J/T Hooks 50' 3/8" 6 x 19 Wire Rope or OEM Specifications

4 Safety Chains 5/16" Grade 70 or Rated Nylon Straps w/Ratchets 2 Safety Chains 5/16" Alloy/OEM Spec & Wheel Straps - Towed Veh Adequate Crossbeams or Ramping Material

CLASS B

Minimum 33,000 Pound GVWR Chassis 16-Ton Boom Rating 150' 7/16" 6 x 19 Wire Rope or OEM Specifications Safety Chains 1/2" Alloy or OEM Specifications Two 8-Ton Snatch Blocks Air Brakes or Hydraulic W/Air Hookup Package Air Hoses and Fittings Steering Wheel Securement Device

Axle Covers/Caps Truck Hitch/Tow Bar with 7,000 Pound Rating (if equipped) Two (2) - 4"x6"x48" Crossbeams (minimum) Tow Chains "Minimum" 1/2" Grade 70 with JT Hooks Wheel Lift Rating - 10,000 Pounds Retracted / 8,000 Pounds Extended Under Lift/Fork Adapters w/Tie-Down Straps or Chains Safety Tie-Down Chains and Binders Aluminum Tow Angles (Minimum 2)

CLASS B CAR CARRIER

Minimum 33,000 Pound GVWR Chassis 50' 3/8" 6 x 19 Wire Rope or OEM Specifications Loading Bridle with J/T Hooks Steering Wheel Securement Device

4 Safety Chains 5/16" Grade 70 or OEM Specifications 2 Safety Chains = 5/16" Alloy/OEM Spec & Wheel Straps for Towed Vehicle Adequate Cross Beams or Ramping Material

CLASS C

Minimum 52,000 Pound GVWR Chassis 25-Ton Boom Rating 200' 5/8" 6x19 Wire Rope or OEM Specifications Two (2) Safety Chains 5/8" Alloy or OEM Specifications Two 12-Ton Snatch Blocks Air Brakes W/Air Hookup Package Air Hoses and Fittings Steering Wheel Securement Device Axle Covers/Caps

Tow Chains 5/8" Grade 70 or OEM Specifications Two (2) 4"x6"x48" Crossbeams (Minimum) Pintle Hook Under Lift Rating - 25,000 Pounds / 12,000 Pounds Extended Under Lift/Fork Adapters w/Tie-Down Straps or Chains Aluminum Tow Angles (Minimum 2) Safety Tie-Down Chains and Binders Truck Hitch/Tow Bar 12,000 Pound Rating (if equipped) Tow Sling 12,000 Pound Rating (if equipped)

CLASS D

Minimum 54,000 Pound GVWR Chassis 35-Ton Boom Rating 250' 3/4" 6x19 Wire Rope or OEM Specifications Two (2) Safety Chains 5/8" Alloy or OEM Specifications Two 12-Ton Snatch Blocks Air Brakes W/Air Hookup Package Air Hoses and Fittings Steering Wheel Securement Device Axle Cover/Caps

Tow Chains 5/8" Grade 70 or OEM Specifications Two (2) 4"x6"x48" Crossbeams (Minimum) Pintle Hook Under Lift Rating - 32,000 Pounds / 16,000 Pounds Extended Truck Hitch/Tow Bar 20,000 Pound Rating (if equipped) Aluminum Tow Angles (Minimum 2) Safety Tie-Down Chains and Binders Tow Sling with 20,000 Pound Rating (if equipped) Under Lift / Fork Adapters w/Tie-Down Straps or Chains

MAXIMUM LIFTING CAPACITY (MLC) CALCULATIONS (Refer to HPM 81.2, Chapter 7, Annex B) FRONT AXLE WEIGHT (FAW), UNLADEN WHEEL BASE (WB), IN INCHES OVER HANG (OH), IN INCHES

FORMULA

1/2 FAW: x WB: ÷ BY OH: = MLC:

CLASS OF VEHICLE BASED ON THE MLC

Alloy/OEM Spec & Wheel Straps - Towed Vehicle

TOW TRUCK INSPECTION GUIDE

CHP 234B (Rev. 5-17) OPI 061 Destroy Previous Editions Chp234B_0419.pdf Page of

LEGEND

P = Pass F = Fail

EQUIPMENT TYPE (CHECK APPROPRIATE BOX)

CONVENTIONAL

UNDERLIFT

TRUCK HITCH

WHEEL LIFT

CAR CARRIER

REQUIREMENTS FOR ALL CLASSES

P F Fail P F

CALIFORNIA VEHICLE CODE REQUIREMENTS

Current Registration Headlights Beam Indicator Tail Lamps License Plate Lamp Stop Lamps Extension Lights Backup Lamps (1969+) Reflectors, Rear Reflectors, Front and Side (1968+) Turn Signals Clearance Lamps (>80" Wide) Amber Warning Lights Warning Devices (Reflectors) Service Brakes

4000 CVC

24400 CVC

24408 CVC

24600 CVC

24601 CVC

24603 CVC

24605 CVC

24606 CVC

24607 CVC

24608 CVC

24951 CVC

25100 CVC

25253 CVC

25300 CVC

26311 CVC

Parking Brake Windshield Windshield Wipers Mirrors Horn Exhaust System Fuel Cap Tire Tread Fenders/Mud Guards Broom Shovel Fire Extinguisher 4B, C Rating Safety Chains Signs

26451 CVC

26700 CVC

26706 CVC

26709 CVC

27000 CVC

27150 CVC

27155 CVC

27465 CVC

27600 CVC

27700 CVC

27700 CVC

27700 CVC

29004 CVC

27907 CVC

Flashlight Wrecking Bar (Large Pry Bar) Six (6) 30-Minute Flares or 6 Reflectorized Cones, Min. 12" Ht.

Trash Cans & Absorbent (4 Gallon Minimum) Shop Rags or Paper Towels Shop to Truck Communications (Cell phones / 2-way radio) Approved Fuel Containers (Classes A and B) if carried Booster Battery or Hot Box Hydraulic Jack Tire Changing Equipment Rubber Mallet / Hub Cap Tool (Classes A and B) Lockout Tools (Classes A and B) Motorcycle Straps (Class A) Sledge Hammer (Classes B, C, and D) Tool Kit Reflective Safety Attire Manufacturer Rating Plates Controls Labeled Wrecker Boom Assembly Wheel Lift Assembly Body and Towing Equipment Mounting Bolts Winch Rating:

Boom Capacity:

Wrecker Controls Throttle Control (if Equipped) Hydraulic Rams, Hoses, Valves Cable Sheaves Recovery Chain Pivot Pin Wheel Lift Tie Down Safety Straps or Chains "L" Arms Claw Tow Sling Assembly (Check for bent inner tubes) Sling Pads Carrier Bed Frame Bed Hinges Bed Safety Lock Slide Pads

SERVICE AND OTHER EQUIPMENT
TOWING EQUIPMENT

WHEEL LIFT

CONVENTIONAL

CAR CARRIER

Loading Bridle

TOW OPERATOR'S SIGNATURE

TOW TRUCK EQUIPMENT SPECIFICATIONS (By Class) P F P F

CLASS A

Minimum 14,000 Pound GVWR Chassis 4-Ton Boom Rating One 4-Ton Snatch Block Tow Dolly (with wheel tie down straps) Steering Wheel Securement Device 100' 3/8" 6 x 19 Wire Rope or OEM Specifications Tow Sling "Minimum" 3,000 Pounds (if equipped) Tow Chains "Minimum" 5/16" Grade 70 with J/T Hooks Two (2) Safety Chains 5/16" Alloy or OEM Specifications Wheel Lift Rating - Extended 3,000 Pounds Two (2) Crossbeams, (1) 4"X4"X60" and (1) 4"X4"X48"(Minimum)

CLASS A CAR CARRIER

Minimum 19,000 Pound GVWR Chassis 50' 3/8" 6 x 19 Wire Rope or OEM Specifications Loading Bridle with J/T Hooks 4 Safety Chains 5/16" Grade 70 or Rated Nylon Straps w/Ratchets Adequate Crossbeams or Ramping Material

CLASS A CAR CARRIER TWO VEHICLE

Minimum 23,500 Pound GVWR Chassis Loading Bridle with J/T Hooks 50' 3/8" 6 x 19 Wire Rope or OEM Specifications 4 Safety Chains 5/16" Grade 70 or Rated Nylon Straps w/Ratchets 2 Safety Chains 5/16" Alloy/OEM Spec & Wheel Straps - Towed Veh Adequate Crossbeams or Ramping Material

CLASS B

Minimum 33,000 Pound GVWR Chassis 16-Ton Boom Rating 150' 7/16" 6 x 19 Wire Rope or OEM Specifications Safety Chains 1/2" Alloy or OEM Specifications Two 8-Ton Snatch Blocks Air Brakes or Hydraulic W/Air Hookup Package Air Hoses and Fittings Steering Wheel Securement Device Axle Covers/Caps Truck Hitch/Tow Bar with 7,000 Pound Rating (if equipped) Two (2) - 4"x6"x48" Crossbeams (minimum) Tow Chains "Minimum" 1/2" Grade 70 with JT Hooks Wheel Lift Rating - 10,000 Pounds Retracted / 8,000 Pounds Extended Under Lift/Fork Adapters w/Tie-Down Straps or Chains Safety Tie-Down Chains and Binders Aluminum Tow Angles (Minimum 2)

CLASS B CAR CARRIER

Minimum 33,000 Pound GVWR Chassis 50' 3/8" 6 x 19 Wire Rope or OEM Specifications Loading Bridle with J/T Hooks Steering Wheel Securement Device 4 Safety Chains 5/16" Grade 70 or OEM Specifications 2 Safety Chains = 5/16" Alloy/OEM Spec & Wheel Straps for Towed Vehicle Adequate Cross Beams or Ramping Material

CLASS C

Minimum 52,000 Pound GVWR Chassis 25-Ton Boom Rating 200' 5/8" 6x19 Wire Rope or OEM Specifications Two (2) Safety Chains 5/8" Alloy or OEM Specifications Two 12-Ton Snatch Blocks Air Brakes W/Air Hookup Package Air Hoses and Fittings Steering Wheel Securement Device Axle Covers/Caps Tow Chains 5/8" Grade 70 or OEM Specifications Two (2) 4"x6"x48" Crossbeams (Minimum) Pintle Hook Under Lift Rating - 25,000 Pounds / 12,000 Pounds Extended Under Lift/Fork Adapters w/Tie-Down Straps or Chains Aluminum Tow Angles (Minimum 2) Safety Tie-Down Chains and Binders Truck Hitch/Tow Bar 12,000 Pound Rating (if equipped) Tow Sling 12,000 Pound Rating (if equipped)

CLASS D

Minimum 54,000 Pound GVWR Chassis 35-Ton Boom Rating 250' 3/4" 6x19 Wire Rope or OEM Specifications Two (2) Safety Chains 5/8" Alloy or OEM Specifications Two 12-Ton Snatch Blocks Air Brakes W/Air Hookup Package Air Hoses and Fittings Steering Wheel Securement Device Axle Cover/Caps Tow Chains 5/8" Grade 70 or OEM Specifications Two (2) 4"x6"x48" Crossbeams (Minimum) Pintle Hook Under Lift Rating - 32,000 Pounds / 16,000 Pounds Extended Truck Hitch/Tow Bar 20,000 Pound Rating (if equipped) Aluminum Tow Angles (Minimum 2) Safety Tie-Down Chains and Binders Tow Sling with 20,000 Pound Rating (if equipped) Under Lift / Fork Adapters w/Tie-Down Straps or Chains MAXIMUM LIFTING CAPACITY (MLC) CALCULATIONS (Refer to HPM 81.2, Chapter 7, Annex B)

FORMULA

1/2 FAW:

x WB:

÷ BY OH:

= MLC:

Alloy/OEM Spec & Wheel Straps - Towed Vehicle P:\work\CHP\Forms in process\Chp234B.xft October 9, 2001 Chp234B Spelling Checker;{224F7DEA-B7C1-11D3-AB40-00902712A5C9};PLSSpeller.cab Michael Broussard Tow Truck Inspection Guide, CHP 234B

CHP

Tow Truck Inspection Guide, CHP 234B 5-04 Michael Broussard Rvsn: 2/11 - OPI Requested various changes in specifications - jc

Rvsn: 3/12 - Minor changes to Tow Truck Inspctn specifications - jc

Rev. 2/13 - Minor changes - jn

Revision 04/14 - Updated minimum GVWR Allowances - jc

Rev. 3-15: Added (4 Gallon Minimum, Fuel, Classes B, C, and D) to SERVICE AND OTHER EQIPMENT section - jn

Rev. 5-17: Added "if carried" to "Aprroved Fuel Containers (Classes A and B)" - jn

File 0419: fixed accessibility warnings, as required by AB 434 -dg

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File details come from the government source that posted it. Updated .