Commercial trucks provide transportation for a wide range of industries. In some regards, they help keep the consumer economy moving along. Commercial vehicles like semitrucks or eighteen-wheelers transport all kinds of raw materials, produce, ready-to-buy items and even milk. Drivers can encounter these vehicles on just about any road.
On country roads and city streets, you always have the option of taking a detour if traffic conditions push you too close to a commercial vehicle. When you're in heavy traffic on the freeway, you may not have an option to change your route. Instead, you may have to drive in close proximity to a commercial truck at high speeds for many miles.