Before traveling long or short distances on expressways, be sure to a. check the gas level in your car b. learn how to read a map while driving c. memorize the name of the exit after the one you need to take

A. check the gas level in your car

Explanation:

You cannot travel either long or short distances without a sufficient amount of gas in your car. For this reason, before traveling you should check the gas level of your car, so you can know if you have enough fuel to reach your destination and to return to your departure if necessary.

Cars stopped on the road for lack of gas, in addition to disrupting traffic, present a danger to other passengers and may cause the driver to receive a fine due to their negligence.