Industries & Professions /
Traffic engineers study factors such as signal timing, traffic flow, high-accident zones, lighting, road capacity, and entrances and exits in order to increase traffic safety and to improve the flow of traffic. In planning and creating their designs, engineers may observe such general traffic influences as the proximity of shopping malls, railroads, airports, or factories, and other factors that affect how well traffic moves. They apply standardized mathematical formulas to certain measurements in order to compute traffic signal duration and speed limits, and they prepare drawings showing the location of new signals or other traffic control devices. They may perform statistical studies of traffic conditions, flow, and volume, and they may—on the basis of such studies—recommend changes in traffic controls and regulations. Traffic engineers design improvement plans with the use of computers and through on-site investigation.