Which of the following is NOT included in the pre-trip check you should perform every time before driving?

• A. Check tire pressure
• B. Check windshield wipers
• C. Check radiator fluid and oil levels
• D. Check lights and signals

Answer: (C)

The pre-trip check is a critical safety procedure that drivers should perform to ensure their vehicle is in good condition before hitting the road. While checking tire pressure, windshield wipers, and lights and signals are commonly included in the pre-trip checks, checking radiator fluid and oil levels is generally not something that needs to be done every single time before driving, especially for short trips or daily use.

The reasoning behind focusing on tire pressure, windshield wipers, and lights and signals is that these components are directly related to immediate safety and visibility while driving. Tire pressure affects vehicle handling and fuel efficiency, while functioning wipers ensure clear visibility in various weather conditions, and operational lights and signals are vital for communication with other road users.

Checking radiator fluid and oil levels is certainly important for the overall health of the vehicle and should be done regularly, but it is typically not necessary to check them before every single trip, particularly if you're aware that they are at appropriate levels from previous checks. Therefore, this makes checking radiator fluid and oil levels the option that is not included in the pre-trip check for every driving instance.