Utah DOT Deployed a Dedicated Short-Range Communications Corridor Supporting Transit Signal Priority Controls For a Total Cost of $575,900.

Utah DOT developed a project based on the initial 2016 deployment of a full Dedicated Short-Range Communications (DSRC) corridor that supported transit signal priority (TSP) controls to leverage connected and automated vehicle (CAV) technology. The deployment site is located along Redmond Road, an 11-mile urban corridor with 30 signalized intersections located in Salt Lake City. The deployment installed 24 of the 30 Intersections with DSRC. Additionally, Onboard communication devices were installed on transit vehicles to support the TSP system.

The project aimed to collect bus data along the DSRC corridor to evaluate the efficiency of the technology's investment and perform a benefit-cost (B/C) analysis. Moreover, this project integrated adaptive traffic  and signal coordination controls into the existing system to optimize signal timing at the intersection level and offset at the corridor level. A microscopic simulation based on the DSRC corridor was developed to evaluate the potential effects of the proposed signal control system.

Table 1 includes a breakdown of the system costs for the DSRC corridor. 

^{*The annual maintenance cost per unit is determined as $1,000 based on a report presented by the National Cooperative Highway Research Program (NCHRP).}