7. REFERENCES
1. Roh, J. and Woojin Chung (2010) 'Reversing control of a car with a trailer using a Driver AssistanceSystem' - IEEE Journal pp.99-104.
2. Sears Williard, T. (1925) 'Ratchet and pawl mechanism' - United states patent office company/ US 1547528 A.
3. GaoWenhua, Yan Xiaomei (2012) 'The design of Car Reversing Anti–Collision Warning System' - IEEE Journal pp.866-869.
4. Sarah Copsey (2010) 'A review of accidents and injuries to Road Transport Drivers'- Published at European agency for safety and health at work.