Products / Dock Equipment / Accesories / Protective Systems / Trailer Stabilizers Trailer Stabilizers Placed under the front frame of your semi-trailers, the APS Resource stabilizers help to reduce accidents. Medium-Duty Trailer StabilizerOSHA recommends trailer stabilizers for unsupported trail… Hold-Safe Trailer StabilizerOSHA recommends trailer stabilizers for unsupported trail… Heavy-Duty Trailer StabilizerOSHA recommends trailer stabilizers for unsupported trail…