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 .