Installed in either external or internal locations and operating in all weathers or lighting conditions, infrared thermal imaging systems greatly enhance transportation safety and efficiency. With infrared thermal imaging systems, traffic, cyclists and pedestrians can be differentiated; hidden dangers, obstacles and hazards in pitch-dark nights can be spotted. Therefore, the possibility of accidents and dangers is greatly reduced. Resistant to changes in light levels, background and environment, infrared thermal imaging systems can also provide real-time & accurate information on traffic and transport user numbers, which may be used to judge the effectiveness of transport programs. Station and airport concourses can be monitored to get information on user levels, congestion and passenger flows through departure, arrival and service areas. Units can be linked to ensure that larger areas are covered.