Slippery roadways usually: Question Slippery roadways usually: Answers Make it more difficult to stop a vehicle. Make it easier to stop a vehicle. Make it easier to drive a vehicle. Can be avoided by driving at night. Explanation It takes a longer distance to stop a vehicle on a slippery road than it does on a dry road. Use caution when driving under conditions that could cause a road surface to become slippery. This questions appears in the following tests: Illinois Class A Knowledge Test Massachusetts Class A Knowledge Test Nebraska Class B Knowledge Test Nevada Passenger New Hampshire Tank North Dakota Class A Knowledge Test Oregon Class A Knowledge Test