Releasing and Setting the Parking and Spring Brakes on a Tractor-Trailer Combination

When releasing the parking and spring brakes on a tractor-trailer combination it is necessary to release the tractor parking brake separately from releasing the spring brakes on the trailer. However, if Intellipark detects a situation where the driver has forgotten to release the trailer spring brakes and the vehicle is in motion, the spring brakes on the trailer automatically release.