In the USA, fines were introduced for engine braking in the town of Avoca (Iowa), where local residents complained about excessive noise from trucks while going down a steep section of the road. Authorities installed cameras and microphones that automatically record violations. This is reported by Interia.
Why the Ban Came About
Engine braking is considered a safe and economical way to reduce speed. It does not wear out brake pads, reduces fuel consumption, and helps control the vehicle on descents. This is especially relevant on mountain roads, where truck drivers often use retarders — braking systems of various types:
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engine
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hydrokinetic
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electromagnetic
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electric
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frictional.
However, in the USA, the problem arose due to compression retarders, known as 'Jake brake'. Older models work very loudly, which led to the restrictions.
How the Fine System Works
On a slope approximately 800 meters long, the speed decreases from 105 to 56 km/h, and at the end — a turn with a limit of 40 km/h. Truck drivers actively brake, and the noise from compression brakes exceeds acceptable limits.
The city tested the control system in spring: cameras recorded vehicles, and microphones measured the noise level. During this time, 183 cases of excessive noise were recorded. In October, the system became permanent. The fine for violations — is 50 dollars.
Similar restrictions are also in effect in other cities in the USA, where compression brakes create noise that exceeds established norms. Despite the benefits of engine braking, local authorities seek to balance road safety and residents' comfort.