With the objective is description of knowledge and practice of traffic participants about regulation helmet and alcohol use while in traffic in 3 provinces of Ha Nam, Ninh Binh, Bac Giang in 2012, the household survey on the road traffic accidents in Ha Nam, Ninh Binh and Bac Giang has been camed out among 1680 road users in the selected households. Most of the study subjects informed that the need to strengthen sanctions in case of non-helmet wearing and using alcohol while driving. About three fifths of the audience watching the communications messages on traffic safety were discussed with the family. High percentage of subjects changed their behaviors after seeing media programs. Males wele more behavior change than females as many as 3 times. Behavior change were mainly "No driving without a helmet" and "No driving after drinking alcoho/". There was 71.3 percent of study participants indicated that their friends use alcohol. Men who have alcohol use accounts for about 90 percent. The level of daily use in Hanam and Ninhbinh was about 10 percent, Bac Giang was only 3.5 percent. Most of study subject's friends (over 90 percent) drive motors, which mainly motorcycles accounted for 97.8 percent. Main recommendations of the study are to increase communication of the helmet wearing and alcohol use regulations on mass media and strengthen the sanctions for the case of non-helmet wearing and drink driving to ensure enforcement of traffic safety laws.