Nowadays, car manufacturers also lend a hand to ensure the stability of a trailer combination. As of 2014, every new vehicle is required to have the Electronic Stabilisation Programme (ESP) this is an enhancement of the Anti-Lock Braking System (ABS) and Traction Control System (TCS). This system detects the difference between driver inputs and actual vehicle responses. The vehicle will respond when differences are detected and brake individual wheels to correct the path of the vehicle, the driver would be notified by the the ESP light flashing on the dashboard.
Almost every ESP systems ensure that the movements of the car are checked and corrected even more closely as soon as the trailer has been connected to the vehicle. As soon as the dangerous swinging of a trailer begins, the system responds within several milliseconds and immediately stabilises the car and trailer. ESP communicates with the CAN Bus of the vehicle and only functions with a vehicle-specific wiring kit.