What is the space cushion for pursuit driving?

What is the space cushion for pursuit driving?

• A. 2 seconds
• B. 4 seconds
• C. 6 seconds
• D. 8 seconds

Answer: (B)

The space cushion is the time gap you keep behind the vehicle ahead, measured in seconds, to give you time to react and stop safely. For pursuit driving, the standard cushion is four seconds. This amount of time accounts for your perception and reaction time, plus braking distance, at elevated speeds and with the potential for sudden moves by the lead vehicle or road hazards. It helps prevent rear-end collisions and provides room to maneuver if you need to slow, stop, or steer to avoid an obstacle. Two seconds is too short for pursuit conditions, since reaction and braking at higher speeds can quickly close the gap. Six or eight seconds would create too large a gap and hinder pursuit effectiveness, though you may increase the cushion in poor weather, heavy traffic, or when visibility is compromised. So, four seconds is the balanced, recommended space cushion for pursuit driving.

The space cushion is the time gap you keep behind the vehicle ahead, measured in seconds, to give you time to react and stop safely. For pursuit driving, the standard cushion is four seconds. This amount of time accounts for your perception and reaction time, plus braking distance, at elevated speeds and with the potential for sudden moves by the lead vehicle or road hazards. It helps prevent rear-end collisions and provides room to maneuver if you need to slow, stop, or steer to avoid an obstacle.

Two seconds is too short for pursuit conditions, since reaction and braking at higher speeds can quickly close the gap. Six or eight seconds would create too large a gap and hinder pursuit effectiveness, though you may increase the cushion in poor weather, heavy traffic, or when visibility is compromised. So, four seconds is the balanced, recommended space cushion for pursuit driving.