When driving: Question When driving: Answers You should always drive at the posted speed limit. You should always drive slightly below the posted speed limit. You should adjust your speed according to conditions. You should drive as fast as possible. Explanation Operators driving too fast is a major cause of fatal crashes. You must continually adjust your speed to a rate that is safe for road and traffic conditions. This questions appears in the following tests: Arkansas Double Colorado Tank Delaware Class A Knowledge Test Indiana Passenger Kansas Class B Knowledge Test Pennsylvania Class A Knowledge Test South Carolina Passenger West Virginia Class A Knowledge Test West Virginia Passenger Wisconsin Class A Knowledge Test