Who invented Jake Brake?

Invented by Clessie Lyle Cummins (1886-1968), this device (produced by the Jacobs manufacturing company since 1961) has contributed significantly to highway safety. via

Why is there no engine braking signs?

So, if engine braking and the compression release brakes can be so useful, why would it be prohibited? Well, the biggest reason is likely a simple one… engine braking for a semi can be rather noisy. That’s why these signs tend to pop up mostly in more rural areas than anywhere else. via

Which brake is the most powerful on a motorcycle?

The front brake is proven to be the best and most effective of the two brakes, giving up to 80%-90% of the motorcycle’s stopping power in emergency stops, contingent on surface conditions. via

Where did the term Jake Brake come from?

The term Jake Brake is a shortening of the phrase “Jacobs engine brake retarder”. The name comes from Jacobs Vehicle Systems, the manufacturer. After founding and retiring from the original engine manufacturer, Cummins Inc., Clessie Lyle Cummins, founded Jacobs Vehicle Systems. via