City-Wide Traffic Engineering Design, District Department of Transportation: CST currently serves as a subconsultant providing traffic engineering design services for intersections with known safety concerns for DDOT. Assignments have included MOT design, including temporary traffic control devices and pedestrian detours, in relation to improvements at several locations as well as signing and pavement marking and curb, sidewalk, bus pad, and roadway plans for the installation of pedestrian ramps, curb extensions, and median nose extensions.