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Mitigating risks associated with the unsafe use of engine brakes

Learn to mitigate risks of unsafe engine brake use in commercial vehicles. Follow best practices for safety, control, and compliance on the road.

The unsafe use of engine brakes, also known as compression release brakes, in commercial vehicles can lead to various safety hazards, for both drivers and other road users. While engine brakes are designed to help slow down heavy vehicles and reduce wear on traditional braking systems, improper use can lead to potentially dangerous situations.

Risk managers at transportation companies or organizations that rely on fleets should be aware of the following risks related to engine brake usage and take steps to mitigate and manage them by adhering to best practices.

Risks associated with unsafe engine brake use

The primary risks related to unsafe engine brake use in commercial vehicles include:

  1. Noise pollution:
    • Excessive noise: Engine brakes can produce loud noise levels, which can be disruptive in residential areas or near schools. Many jurisdictions have noise ordinances that restrict their use in certain areas.
    • Community complaints: Frequent use of engine brakes in populated areas can lead to complaints from residents and potential fines for drivers or companies.
  2. Loss of control:
    • Skidding: If engine brakes are applied suddenly on slippery surfaces (For example, wet or icy roads), it can cause the rear wheels to lock up, leading to skidding and loss of control.
    • Unstable loads: In vehicles with heavy or unsecured loads, sudden deceleration from engine braking can shift the load, increasing the risk of tipping or losing cargo.
  3. Increased stopping distance:
    • Misjudging distance: Relying too heavily on engine brakes without considering the vehicle's speed and weight can lead to longer stopping distances, especially on downhill grades.
    • Inadequate braking: If the engine brake is used inappropriately, it may not provide sufficient deceleration, heightening the risk of potential collisions.
  4. Driver distraction:
    • Focus on controls: Constantly adjusting the engine brake settings can distract drivers from monitoring the road and traffic conditions, increasing the risk of accidents.
    • Overconfidence: Drivers may become over-reliant on engine brakes, neglecting to use the primary braking system effectively.
  5. Mechanical issues:
    • Wear and tear: Improper use of engine brakes can lead to increased wear on engine components, potentially resulting in mechanical failures.
    • Brake system strain: Overuse of engine brakes can place additional strain on the vehicle's braking system, leading to premature wear and potential brake failure.

Six best practices for safe use of engine brakes

To mitigate these risks and enhance safety, risk managers should communicate these best practices across their organizations, and specifically among drivers of commercial vehicles:

  1. Understand local regulations: Be aware of local laws and regulations regarding the use of engine brakes, especially in residential or noise-sensitive areas.
  2. Use brakes in appropriate conditions: Use engine brakes primarily on downhill grades or when significant deceleration is necessary. Avoid using them on slippery or wet surfaces.
  3. Combine with service brakes: Use engine brakes in combination with service brakes for optimal control and stopping power, rather than relying solely on engine braking.
  4. Monitor speed: Always be aware of your speed and adjust engine brake use accordingly to ensure safe stopping distances.
  5. Educate drivers with training programs: Provide training for drivers on the proper use of engine brakes, including when and how to use them safely. Be sure this training is easily accessible to all relevant parties.
  6. Conduct routine maintenance: Ensure that the engine braking system and traditional braking systems are regularly inspected and maintained to prevent mechanical issues.

While engine brakes are a valuable tool for commercial vehicle drivers, unsafe use can lead to significant risks and safety hazards. By understanding the potential dangers and adhering to best practices, drivers can use engine brakes effectively and safely, contributing to overall road safety. Continuous education and awareness remain essential for minimizing risks associated with engine brake use.

For more information about how to safely use engine brakes or other related topics, please contact your Marsh representative.

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