The drinking and driving project in Guangxi is a four-year project with multi-sector participation. The project involves three cities in China: " Nanning and Liuzhou in Guangxi province as intervention cities " Changsha in Hunan province as the control city. The project has gone through the process of a situational survey (baseline survey), intervention and evaluation: - The situational survey (include both roadside survey and crash survey) helped to find out the nature and scope of problem related to drinking and driving in the three cities, as well as the issues (people, time and places) that should be the focus during the intervention. - The intervention was developed using the findings of the baseline survey. It was carried out at the intervention cities with both components of a public education campaign and enhanced law enforcement. The purpose was to raise public awareness of the risk of drinking and driving behaviour, reduce prevalence of drinking and driving, as well as the number of related casualty crashes. - The post-intervention survey helped to evaluate the effectiveness of the intervention and better understand the experiences and lessons learned from it. The outcomes showed the success of the intervention. Nearly 75 percent of people interviewed in Nanning and 79 percent of people interviewed in Liuzhou aware of our public education campaign. And, the BAC positive rate in Nanning and Liuzhou was significantly decreased from 6.8 percent to 1.6 percent (?2=375.883, df=1,p<0.001). On the contrast, the BAC positive rate in Changsha was increased from 3.1 percent to 4.4 percent??2=12.109, df=1,p<0.001?.