Abstract speed of vehicles and the unrest in the southern provinces, which is a key factor. The traffic calming The government has taken various actions. To prevent or quell unrest that might occur. Since the unrest began. The vehicles on the road is a measure taken to prevent any unrest that might occur. The format of practice is to set checkpoints slowing checkpoint slowed. A kind of traffic calming measures that were used to assess the effectiveness Müller active in the area. Three provinces were selected by the investigator to be mounted slowed. Narathiwat, Pattani and Yala to analyze data about the speed of vehicles in each of the past while driving through speed bumps. Fuel and energy loss of each vehicle type. And analyzed in the study, along with data from field trials, which are forms of barrier slowed zigzag is suitable for installation. For those driving to save fuel and travel time. The width of the long-term period. After studying the installation of checkpoints slowed to understand the behavior of driving speeds in the zone defense slowed. The driver of the vehicle, driving at a speed of 85 to 30 kilometers per hour. The speed of the vehicle in the early and slowing the speed of spread. So speed is reduced when approaching the checkpoint slowed more. Driving behavior, vehicle speeds up to 30 mph. Prior to Checkpoint slowed. Found that the frequency of speed decreases with distance from the checkpoint slowed. And the 85th percentile speed. Driving pickup zone defense slowed the higher speed of the vehicle other types of research can change the behavior of the vehicle by slowing the speed, efficiency and orderly operation of a vehicle on the road is important. : Road safety / side slow speed / fuel / impact time.
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