To help your vehicle be seen by others: Question To help your vehicle be seen by others: Answers Headlights should be clean. Headlights should be turned off during the day. Headlights should be covered with grease. Headlights should only be used in the rain. Explanation When driving at night, it is important that your lights be clean so that they provide as much light as possible. This will help others to see your vehicle. This questions appears in the following tests: Delaware Tank Indiana Tank Minnesota Double Pennsylvania Class B Knowledge Test Texas Class A Knowledge Test