Jake Brakes and Noise Laws: What Every CDL Driver Should Know
top of page
Search

Jake Brakes and Noise Laws: What Every CDL Driver Should Know


Jake Bakes

If you’ve ever driven past a sign that reads “No Engine Brakes” or “No Jake Brakes”, you may have wondered why such a helpful safety feature is restricted. At Zeta Driving School, we prepare CDL students not only to operate trucks safely but also to understand the regulations that affect their daily driving.


What Are Jake Brakes?

Jake brakes (short for Jacobs Engine Brakes) are a type of compression release braking system. Instead of relying only on friction brakes, the system slows the truck by releasing compressed air inside the engine, creating strong drag that helps control speed. Learn more from Jacobs Vehicle Systems 


Benefits of Jake Brakes:

  • Provides extra control on steep grades

  • Reduces wear on standard brakes

  • Improves overall safety for the driver and public


Why Some Areas Restrict Jake Brakes

The restrictions aren’t about safety. In fact, Jake brakes are widely regarded as one of the safest tools in a truck driver’s toolkit. Instead, most bans are due to noise ordinances.

  • The sound from an unmuffled Jake brake can exceed 100 decibels, similar to a jackhammer. (FHWA Noise Basics)

  • Communities near highways want to maintain peace, especially during nighttime hours.

  • Local governments often post “No Jake Brake” signs and may issue fines for violations.


Where Jake Brakes Are Prohibited

Jake brake bans are most often found in:

  • Residential neighborhoods close to highways

  • Small towns with strict noise ordinances

  • Certain stretches of state highways or toll roads

For example, many municipalities in Pennsylvania and Colorado have local laws governing engine brake use.



CDL student driver sitting in a truck with a red vest

Why CDL Students Should Care

As a professional truck driver, you’ll need to know when and where Jake brakes are allowed. At Zeta, we teach students to:

  • Recognize “No Engine Brake” signage

  • Balance the safe use of Jake brakes with compliance to local rules

  • Use Jake brakes correctly on grades, highways, and city roads


Looking to earn your CDL? Explore our CDL Training Programs HERE.

bottom of page