High school students interested in becoming truck drivers may be able to gain experience by working as drivers' helpers during summer vacations or in part-time delivery jobs. Many people get useful experience in driving vehicles while they are serving in the armed forces. It may also be helpful to talk with employers of local or over-the-road truck drivers or with the drivers themselves.

The Internet provides a forum for prospective truck drivers to explore their career options. Two online magazines—Overdrive (https://www.overdriveonline.com) and Land Line Magazine (https://landline.media)—review news and issues in the trucking industry and answer frequently asked questions for people interested in trucking careers.

Truckers drive trucks of all sizes, from small straight trucks and vans to tanker trucks and tractors with multiple trailers. The average tractor-trailer rig is no more than 102 inches wide, excluding the mirrors, 13 feet and six inches tall, and just under 70 feet in length. The engines in these vehicles range from 250 to 600 horsepower.

Over-the-road drivers operate tractor-trailers and other large trucks that are often diesel-powered. These drivers generally haul goods and materials over long distances and frequently drive at night. Whereas many other truck drivers spend a considerable portion of their time loading and unloading materials, over-the-road drivers spend most of their working time driving.

Drivers start their preparations for long-distance runs at the terminal or warehouse where they receive their load. They check over the vehicle to make sure all the equipment and systems are functioning and that the truck is loaded properly and has the necessary fuel, oil, and safety equipment.

Some over-the-road drivers travel the same routes repeatedly and on a regular schedule. Other companies require drivers to do unscheduled runs and work when dispatchers call with an available job. Some long-distance runs are short enough that drivers can get to the destination, remove the load from the trailer, replace it with another load, and return home all in one day. Many runs, however, take up to a week or longer, with various stops. Some companies assign two drivers to long runs, so that one can sleep while the other drives. This method ensures that the trip will take the shortest amount of time possible.

In addition to driving their trucks long distances, over-the-road drivers have other duties. They must inspect their vehicles before and after trips, prepare reports on accidents, and keep daily logs. They may load and unload some shipments or hire workers to help with these tasks at the destination. Drivers of long-distance moving vans, for example, do more loading and unloading work than most other long-haul drivers. Drivers of vehicle-transport trailer trucks move new automobiles or trucks from manufacturers to dealers and also have additional duties. At the plants where the vehicles are made, transport drivers drive new vehicles onto the ramps of transport trailers. They secure the vehicles in place with chains and clamps to prevent them from swaying and rolling. After driving to the destination, the drivers remove the vehicles from the trailers.

Over-the-road drivers must develop a number of skills that differ from the skills needed for operating smaller trucks. Trailer trucks vary in length and number of wheels, so skilled operators of one type of trailer may need to undergo a short training period if they switch to a new type of trailer. Over-the-road drivers must be able to maneuver and judge the position of their trucks and must be able to back their huge trailers into precise positions.

Local truck drivers generally operate the smaller trucks and transport a variety of products. They may travel regular routes or routes that change as needed. Local drivers include delivery workers who supply fresh produce to grocery stores and drivers who deliver gasoline in tank trucks to gas stations. Other local truck drivers, such as those who keep stores stocked with baked goods, may sell their employers' products as well as deliver them to customers along a route. These drivers are known as route drivers or route-sales drivers.

Often local truck drivers receive their assignments and delivery forms from dispatchers at the company terminal each day. Some drivers load goods or materials on their trucks, but in many situations dockworkers have already loaded the trucks in such a way that the unloading can be accomplished along the route with maximum convenience and efficiency.

Local drivers must be skilled at maneuvering their vehicles through the worst driving conditions, including bad weather and traffic-congested areas. The ability to pull into tight parking spaces, negotiate narrow passageways, and back up to loading docks is essential.

Some drivers have helpers who travel with them and assist in unloading at delivery sites, especially if the loads are heavy or bulky or when there are many deliveries scheduled. Drivers of some heavy trucks, such as dump trucks and oil tank trucks, operate mechanical levers, pedals, and other devices that assist with loading and unloading cargo. Drivers of moving vans generally have a crew of helpers to aid in loading and unloading customers' household goods and office equipment.

Once a local driver reaches the destination, they sometimes obtain a signature acknowledging that the delivery has been made and may collect a payment from the customer. Some drivers serve as intermediaries between the company and its customers by responding to customer complaints and requests.

Each day, local drivers have to make sure that their deliveries have been made correctly. At the end of the day, they turn in their records and the money they collected. Local drivers may also be responsible for doing routine maintenance on their trucks to keep them in good working condition. Otherwise, any mechanical problems are reported to the maintenance department for repair.