brake lag travel; movement during brake reaction time
Technical term in automotive and railway contexts. Refers to the distance or time a vehicle travels after the brakes are applied but before deceleration begins. Often used in compounds like 空走時間 (brake reaction time) and 空走距離 (brake lag distance).
The brake lag distance increases with speed.
In accident analysis, the brake reaction time must also be taken into account.
brake lag
brake reaction distance; brake lag distance
Compound of 空 (empty, idle) and 走 (run, travel), literally 'idle running'. The exact historical derivation is uncertain; the term is used in modern technical contexts.