Combination Vehicles Test
- What happens to the trailer emergency brakes if there is a loss of pressure in the emergency line?
- When the emergency line loses pressure, what happens to the tractor protection value?
- If the air lines on a truck are color coded, which lines are blue?
- To connect the glad hands, the tow seals are pressed together with the couplers at what kind of angle to each other?
- Why should you lock the glad hands to each other when you are not towing any trailers?