Speed management is a significant challenge to reduce traffic crashes in Thailand especially in small and rural communities where the main roadway through towns or villages serves most of the transportation needs. Outside the towns or villages, the roadway provides high-speed travel over long distances; within the built-up area, however, the same roadway accommodates local access, pedestrian of all ages, on-street parking, bicycles, and other features of the community.
Currently, speed management in Thailand has focused only on the law enforcement by police. However, the law enforcement alone is often leads to temporary compliance at significant cost. A more permanent way to reinforce speed reduction is to change the look and feel of the road by installing traffic calming treatments that communicate to drivers that the function of roadway is changing. In Thailand, traffic calming is not used extensively, and not many techniques have been applied. However, traffic calming is very common in Europe and USA where several measures such as colored pavement, physical lane narrowing, signing, and landscaping are often combined. In this project, a gateway treatment will be implemented to lower speed on the approach and entrance to communities, and followed by a series of other measures to encourage drivers to maintain appropriate speeds.