noun
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).
空走距離は速度が高いほど長くなる。
The brake lag distance increases with speed.
事故解析では空走時間も考慮する必要がある。
In accident analysis, the brake reaction time must also be taken into account.