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1: Pre and Post Trip Inspections

  • Page ID
    49405
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    Introduction

    Conducting thorough pre-trip and post-trip inspections is a critical responsibility for commercial motor vehicle (CMV) operators to ensure the safety and reliability of their vehicles. This section, A1.1.3, teaches driver-trainees the procedures for pre-trip and post-trip inspections as specified in §§ 392.7 and 396.11, including en route vehicle inspections and appropriate inspection locations.

    Learning Objectives

    By the end of this unit, trainees will be able to

    1. Identify the critical components of a pre-trip and post-trip inspections according to federal and state regulations.
    2. Identify and report vehicle defects and deficiencies.

    Key Concepts

    The key concepts in this section include pre-trip, post-trip, and en route vehicle inspections to ensure CMV safety and compliance with regulations.

    Relevant Regulations

    California state and federal regulations mandate strict adherence to inspection protocols for CMV operators to ensure road safety. These include:

    • 49 CFR § 392.7: Requires drivers to inspect specific parts and accessories to ensure they are in good working order before operating the vehicle.
    • 49 CFR § 396.11: Requires drivers to complete a written post-trip inspection report identifying any vehicle defects or deficiencies.
    • California Vehicle Code Section 2802: Outlines the requirements for vehicle inspections and the responsibilities of drivers and motor carriers.

    Detailed Content

    Driver-trainees must be proficient in conducting pre-trip inspections, which involve a comprehensive check of the vehicle to ensure it is safe for operation. The following areas are required as part of the vehicle inspection test at the DMV. This section will serve as a visual aid for the pre-trip inspection. Details can be found in the Commercial Driver’s License Supplemental Handbook DL 650, California Commercial Driver Handbook and will be demonstrated during lab. This section will serve as a visual aid for trainees to master the outside portion of the inspection for the DMV exam and should be used with the inspection sheet given in class.

    • 1.1: Front of Vehicle Engine Area
      This page outlines the truck inspection process, which includes checking external conditions like fluid leaks, leveling, and lighting, as well as inspecting the engine compartment for fluid levels and leaks. It emphasizes the importance of a thorough evaluation of the steering system, ensuring all components are securely mounted and in good condition.
    • 1.2: Steering Axle
      This page discusses safety inspections for vehicle tires, front suspension, and brake systems, detailing criteria such as tire pressure, condition, tread depth, and rim integrity. It outlines requirements for suspension components, including springs, frame, shock absorbers, and brake hoses, highlighting the importance of avoiding damage or contamination to ensure safe vehicle operation.
    • 1.3: Side of Vehicle
      This page offers a vehicle inspection checklist focusing on clearance and signal lights, electrical systems, mirrors, fuel tanks, and frame integrity. It emphasizes that lights must be amber and clean, cables and batteries should be secure and free from corrosion, mirrors must be clean and secured, fuel tanks must be tightly capped and leak-proof, and the frame and fasteners must be in good condition.
    • 1.4: Combination Vehicles Only
      This page details inspection criteria for various truck and trailer components, including air and electrical connectors, the fifth wheel skid plate, and locking mechanisms. It stresses the importance of securing components, checking for damage, wear, leaks, and proper lubrication. Key inspections include the integrity of hoses, the positioning of the fifth wheel, and the engagement of locking jaws and release arms to ensure safe operation.
    • 1.5: Trailor Only
      This page outlines a thorough inspection of the trailer, noting that the landing gear, fifth wheel, and front marker light are in good condition. The frame is free from damage, with all fasteners secure. Additionally, the trailer floor is intact and reflective tape is correctly applied.
    • 1.6: Rear of Trailer
      This page emphasizes that trailer lights—including stop lights, turn signals, clearance lights, and markers—must be red, clean, and intact, and highlights the necessity of securely affixing reflective tape to the trailer for safety.


    1: Pre and Post Trip Inspections is shared under a CC BY-NC 4.0 license and was authored, remixed, and/or curated by LibreTexts.