在情況良好時與前車預留至少兩秒行車時間的實用規則。
A practical rule for good conditions that leaves a time gap of at least two seconds behind the vehicle in front.
在情況良好時與前車預留至少兩秒行車時間的實用規則。
A practical rule for good conditions that leaves a time gap of at least two seconds behind the vehicle in front.