This is a slow-moving vehicle sign and should be mounted on all farm machinery, including road construction equipment and animal-drawn vehicles. The sign should signal motor vehicle drivers to slow down. Vehicles displaying the slow-moving vehicle sign are prohibited by law to go faster than 25 mph
Imagine traveling at 55 mph and coming upon a car traveling at 45 mph that is 500 feet (about 1/10 of a mile) ahead. After six seconds, you will have 412 feet to react before colliding with that car. However, if traveling at 55 mph and coming upon a horse-drawn vehicle traveling at 5 mph that is 500 feet ahead, you will have only 44 feet to react before colliding in the same six seconds. The car would hit the horse-drawn vehicle in just 6 1/2 seconds. Therefore, immediately upon seeing the slow moving vehicle emblem, slow down and prepare to pass with caution.
