Traffic specialists deal with a wide range of activities covering both the design of projects and the operation of traffic-control devices on streets and highways.  They analyze traffic volume and accident data to determine the need for changes to the highway system.  They also design all traffic control plans for construction projects. 

Traffic studies specialists review and analyze traffic control problems and make field inspections to observe traffic operations.  They assist in signing, striping, and signal and lighting operations, to manage traffic flow and alleviate congestion.  Traffic specialists work with traffic-signal timings, speed limits, sign replacement, and safety analysis in spot locations.  Intelligent Transportation Systems (ITS) are an exciting and emerging arena for traffic specialists. All of Missouri's metropolitan areas have an extensive ITS program.