This section applies only to a Class E (truck) vehicle registered or of a type capable of being registered in this State as a Class E (truck) vehicle with a manufacturer’s rated capacity of 3/4 ton or less, the gross vehicle weight of which does not exceed 7,000 pounds. Subject to paragraph (2) of this subsection, this section does not apply to: A vehicle traveling at a speed of not more than 25 miles per hour; or The transportation of: An employee to or from a work site by the employer of the employee; or An individual in a vehicle engaged in farming operations. This subsection may not be construed as to eliminate applicable child safety seat and seat belt requirements under §§ 22-412.2 and 22-412.3 of this article. An individual may not drive a Class E (truck) vehicle on a highway in the State while a passenger under the age of 16 years is riding in an unenclosed bed of the vehicle.