Question On a paved, two-lane road, sand and gravel are most likely to collect: Answers In the left wheel track. Near the center of the road. Near the sides of the road. In the center of each lane. Explanation Dirt and gravel collect along the sides of the road, especially on curves and ramps leading to and from highways. Use extra caution when riding over loose dirt and gravel. This questions appears in the following tests: Pennsylvania Motorcycle Practice Test 17