SRF has a long history of designing traffic engineering solutions for the most complex multi-modal environments.  Our engineers are experts in traffic signal, signing, and pavement marking design.  We have completed large-scale, successful projects in all types of environments ­– from high-speed expressways to downtown grid networks with significant pedestrian and transit interaction.  Many of our projects involve leading-edge technology including railroad preemption, transit signal priority, flashing yellow arrow turn treatments, and unique geometry such as single-point urban interchanges, diverging diamond interchanges, reduced-conflict intersections, and roundabouts.

  • Traffic signal design
  • Flashing yellow arrow retrofits
  • Traffic signal construction
  • Signing design
  • Pavement markings design
  • Work zone traffic control and detour plans
  • Intersection Control Evaluations
  • Railroad preemption design/timing
  • Advanced Synchro, VISSIM, and Vistro micro-simulation operations analysis