Low-cost Speed Limit Monitoring System for Developing Countries Using a Series of Active Infrared Sensors

Over speed is one of the major causes of traffic injuries, especially in low and middle-income countries. The speed limits are predetermined per particular zone but violated by drivers. The objective of the study is to design and develop a low-cost system that can accurately detect speed by using an array of active infrared sensors enabled by specialized algorithm and submit violation-related data to the data-center. The main advantages of this low-cost system are (1) providing the real-time speed limit violation related data for timely and data-driven decision making and (2) portability of the hardware that could easily be deployed in accident-prone zone. The experimental results show the average error of speed measured by prototyped solution was +/-2.56% compared to an existing solution.