For the Driver
* Must be at least 18 years old.
* Have a valid commercial driver's license (CDL).
* Have passed a physical examination and drug test.
* Have completed the required training.
For the Passenger
* Must be at least 16 years old.
* Must not have a record of any serious traffic violations.
* Must not be under the influence of any alcohol or drugs.
* Must be able to safely and securely occupy a seat in the 18-wheeler.
It is also important to note that different states may have their own specific regulations and requirements for passengers riding in 18-wheelers. Therefore, it is always a good idea to check the local laws and regulations before traveling.