Abstract: Road traffic volume control is an important means to relieve traffic congestion and reduce vehicle exhaust emissions during major events in Beijing. There are significant differences in vehicle type proportion and driving cycle between suburban highway and city roads. The impact of traffic volume restriction on vehicle exhaust emissions for suburban highway is the basis of air quality protection program development, air pollution control measures evaluation and air quality projection and forecast. Based on the suburban highway traffic volume information during and after Chin's Victory Day Parade period in 2105, the emissions intensity computing, roadside pollutant concentration monitoring and inverse model methods were applied to study the effect of traffic volume restriction on vehicle exhaust emissions. The results showed that the traffic volume of national roads, provincial roads and county roads decreased by 21%, 29% and 24%, respectively, during the traffic restriction period. The freight vehicles had a larger decline than the passenger ones, while the vehicle speed increased correspondingly. The emissions intensity of CO, NO_x, HC and PM for national roads decreased by 41%, 46%, 48% and 76%, for provincial roads decreased by 43%, 31%, 45% and 47%, and for county roads decreased by 33%, 27%, 34% and 43%, respectively. Roadside monitoring results showed that the concentration of NO_x fell by 47 %, and the inverse model method results showed that NO_x emissions intensity decreased by 37% during the traffic restriction period.