The Dangers of Coasting : Understanding Rule 122

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Highway Code Rule 122

📖 Rule 122 Full Regulations & Explanation

Rule 122 ↗
Coasting. This term describes a vehicle travelling in neutral or with the clutch pressed down. It can reduce driver control because

engine braking is eliminated
vehicle speed downhill will increase quickly
increased use of the footbrake can reduce its effectiveness
steering response will be affected, particularly on bends and corners
it may be more difficult to select the appropriate gear when needed.

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The Dangers of Coasting : Understanding Rule 122

Defining " Coasting "

According to Rule 122 , coasting occurs when a vehicle travels in neutral or with the clutch pressed down .

Reduced Driver Control

The primary danger of coasting is the overall reduction in the driver's ability to control the vehicle's movement and response .

Engine Braking is Eliminated

Without the engine connected to the transmission , the natural slowing effect of the engine is lest , forcing total reliance on mechanical brakes .

5 Major Risks

Rapid Downhill Acceleration

When traveling downhill , a coasting vehicle will increase speed quickly because there is no ongine resistance to counter gravity .

Reduced Brake Effectiveness

Over - reliance on the footbrake while coasting can lead to overheating , which significantly reduces the brakes ' stopping power .

overheating

stopping power reduced

Impaired Steering Response

Steering becomes less predictable and responsive , which is particularly dangerous when navigating bends and corners .

Gear Selection Difficulty

If an emergency maneuver is required , it may be more difficult for the driver to quickly select the appropriate gear for the vehicle's current speed .