Which of the following vehicles is exempt from inspection?

Farm machinery is exempt from inspection because it is not used on public roads in the same way as passenger vehicles or trucks. Regulations typically focus on vehicles that are frequently utilized on highways or public transportation systems, where safety and emissions controls are critical to protect the public and the environment. Farm machinery, such as tractors or combines, primarily operates on private property, engaging in agricultural activities that do not present the same risks associated with on-road vehicle operation.

While other vehicles like passenger vans, light-duty trucks, and compact cars are designed for road use and are subject to safety and emissions inspections to ensure they meet state standards, farm machinery is recognized as needing less oversight in this context, given its limited public road use and distinct regulatory framework governing agricultural equipment.