What is engine braking in truck accident cases?
Truck Accidents - September 23, 2025
Engine braking is a technique that allows truck drivers to slow down without relying solely on traditional brakes. While it can help control speed, especially on steep declines, misusing this system can be dangerous. If you were injured in a truck crash and believe engine braking may have played a role, contact an Aurora truck accident lawyer at Horwitz, Horwitz & Associates today.
How does an engine brake work?
Engine braking is often referred to as a ‘Jake brake’ or compression release engine braking, according to the Federal Motor Carrier Safety Administration (FMCSA). This works by using an exhaust valve to quickly release compressed air from the engine cylinders. This prevents a power stroke from the engine and slows the semi truck.
Another form of engine braking for diesel engines is known as exhaust braking, where the driver can use a valve to increase exhaust backpressure, thereby slowing the vehicle.
What are the benefits of engine braking?
The primary benefit of engine braking is that it enables a heavier vehicle to reduce speed without excessive use or the risk of overheating the standard braking system. This braking method is often used for trucks with heavy cargo on steep declines. Additionally, drivers can reserve fuel by stepping off the accelerator.
What are the risks of engine braking?
While engine braking can be a helpful tool, if truck drivers use it inappropriately, it may cause more problems than it solves. In some cases, it can cause mechanical strain, particularly when the driver aggressively downshifts. This strain can cause damage to the clutch, transmission, and engine due to increased friction or overreving.
How can engine braking cause an accident?
When a driver uses the engine to reduce speed instead of the brakes, drivers around them will not have the visual indicator of brake lights, which may cause a collision with the back of the truck. This can be frustrating because it looks like the following vehicle was responsible, and without the support of a knowledgeable law firm, you may get stuck with responsibility that is not yours.
A sudden reduction in speed can cause the wheels to lock, resulting in a loss of traction and a shift in cargo. This sudden weight shift can cause the driver to lose control of the truck or trailer.
Is engine braking legal?
There are no federal restrictions on engine braking. However, it is a loud process that can be disruptive in residential and populated areas. Truck drivers should stay aware of the municipal restrictions in the areas they pass through.
What can truck drivers do to safely engage the engine brake?
If a truck driver is forced to engine brake, they should ensure that they are doing so in ideal conditions, which typically means good visibility and dry roads. You can use engine braking gradually on longer stretches of road and avoid sudden stops. Drivers may also intermittently tap the brakes to signal to other drivers that the truck is slowing.
Call Horwitz, Horwitz & Associates for support in your truck accident case
A truck accident often has devastating consequences, and holding trucking companies accountable for negligent hiring, training, or supervision practices is critical to keeping drivers safe. If you have been injured in a truck accident and suspect that engine braking played a role in it, you may need additional support to make your case and recover the compensation you deserve.
Our team is ready to support you. Contact us today at (800) 985-1819 to schedule a free case review. You can also contact us online at any time.
