Final answer:
Attaching a tow bar and allowing the vehicle to roll on all four tires is known as flat towing. This method is commonly used for recreational vehicles (RVs) and allows for easy and efficient transportation of a vehicle behind another.
Step-by-step explanation:
Attaching a tow bar and allowing the vehicle to roll on all four tires is known as flat towing. This method involves connecting the towed vehicle to the towing vehicle using a hitch and tow bar. The towed vehicle is then towed with all four wheels on the ground.
Flat towing is commonly used for recreational vehicles (RVs) and allows for easy and efficient transportation of one vehicle behind another.
For example, if someone wants to transport their car behind an RV, they can use flat towing. The car is connected to the RV using a tow bar, and all four wheels of the car remain in contact with the ground while being towed.