You are driving a 30 foot bus on a highway, the road is dry and visibility is good, the distance between you and the vehicle ahead of you should not be less than seconds

Four(4) seconds.

Explanation:

Under normal driving conditions, in a clear weather with good visibility and dry roads, a driver driving a normal sized vehicle is advised to stay at least two seconds behind the vehicle in front.

However for a 30 foot bus which is heavier than a normal sized vehicle, and takes longer to come to a stop when the brakes are applied, the driver is advised to stay at least four seconds behind the vehicle in front.

answer; the miracles;