In wet weather how might a driver judge what is a safe following distance from the vehicle in front?

Question

Accepted Answer

By allowing at least four seconds to elapse between the vehicle in front and the driver?s own vehicle passing a fixed point.

Answer

By allowing at least two seconds to elapse between the vehicle in front and the driver?s own vehicle passing a fixed point.

Answer

By allowing two vehicle lengths between the vehicles.

Answer

By allowing four vehicle lengths between the vehicles.