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Trailer Control Systems

WABCO is the proven market leader in trailer controls offering fleet and owner-operators a robust portfolio of Anti-Lock Braking Systems (ABS) and Roll Stability Support (RSS) for virtually any trailer application. WABCO is the trailer ABS leader with an install base of more than 6.5 million systems worldwide.



EasyStop™ and Enhanced EasyStop™

Trailer ABS

Current generation ABS that provides trailer monitoring and control capabilities to fleet and owner-operators

2S/1M Basic

2-sensor/1-ABS relay valve system provides increased directional stability while meeting FMVSS-121 requirements. Recommended for converter dolly and semi-trailer applications.

2S/2M Standard

2-sensor/2-ABS relay valve system delivers extra control and directional stability with increased protection against tire flatspotting. Valves can be serviced individually. Recommended for single and tandem axle semi-trailers.

4S/2M Premium

Choice of 2 or 4 sensors. A third relay valve is available on the 4-sensor model. Recommended for tandem axle semi-trailers, multi-axle or full trailers.



Next Generation Trailer ABS

New generation of global ABS for all trailer types. iABS™ offers a more integrated and simplified design, as well as increased functionality to enhance the safety and efficiency of trailers.

iABS offers both tank and frame mounting option

Up to 20 optional Intelligent Trailer functions

5V CAN communication allows for connecting and communicating to systems beyond braking

Available only on premium variants, generic input/output (GIO) ports deliver a wide variety of functions and applications


Roll Stability Support

WABCO Roll Stability Support (RSS) systems for trailers incorporate ABS performance, key safety features and improved roll mitigation.

Automatically applies trailer brakes as needed in order to reduce the risk of rollover and helps the driver bring the vehicle under control

RSS effectiveness is even greater when the tractor is equipped with WABCO Stability Control

RSS 1M is a 2-sensor/1-modulator system with advanced performance

Related products

WARNING: This product can expose you to chemicals including Nickel, which is known to the State of California to cause cancer and birth defects, or other reproductive harm. For more information, go to www.P65Warnings.ca.gov

Get in touch

  • Get in touch with us

    Call us at 855-228-3203 or email us at wnacustomercare@wabco-auto.com