A person may legally ride in the back of a pickup truck when: The sides of the pickup bed are at least 24 inches high. The back of the pickup is covered with a camper shell. In a secured seat and while using an approved safety belt.

C.  In a secured seat and while using an approved safety belt.

Explanation:

Pick up trucks are manufactured for the purpose of transporting goods or other equipment but not for the transportation of humans. While riding at the back of a pickup truck can seem enticing, if appropriate measures are not considered, then there would likely be an accident for the driver might take a sharp turn which could cause the passengers behind harm.

One of the laws for riding in the back of a pickup truck is possessing a federally-approved restraint system which protects the rider in the bed of the truck. So, the rider should seat in a secured seat with an approved safety seat belt to keep him protected in the event of a crash.

i think it can have both positive and negative effects on businesses.

for example:

lets say you own a small business and taxes go up 4% that means it is going to cost your business more money to buy product to sell. but at the same time you make more money from the tax rise.

that is my theory.