[1795]

Some places also do a broomstick test as well. They place the broomstick, or similar straightedge, on top of the roll bar and rest it on top of the windshield and the driver's helmet cannot touch the straightedge. This could lead to needing a slightly higher roll bar. if your helmet is higher than the windshield. You can place a box on top of the body behind the driver's seat, sit in the car with your helmet on and use a straightedge to the windshield to check on how high of a roll bar you will need.