1. K. Ambroz, and C. Olaya, Wanted: Easy riders the aging of the German motorcycle rider population and its implications on the motorcycle market, (2006).
2. A.S.K. Cheng, T.C.K. Ng, Development of a Chinese motorcycle rider driving violation questionnaire, Accident Analysis and Prevention. 42(2010) 1250-1256.
3. PDRM, LaporanTahunan PDRM 2009 (Royal Malaysia Police Annual Report, 2009). Royal Malaysia Police, Ed. Kuala Lumpur, Malaysia, (2009).
4. G. Jacobs, A. Aeron-Thomas, A. Astrop, Estimating global road fatalities, TRL Report, 445, Transport Research Laboratory, London, United Kingdom, (2000).
5. M.A. Adnan, A. MohamadYusof, N. Sulaiman, C.A. CheHitam, Exploration of traffic performance measures for exclusive motorcycle lane at diverging and basic segment facilities, IET Road Transport Information and Control Conference and The ITS United Kingdom Members' Conference, RTIC, 2011, pp.1-5.