The traffic signal at S. Main St. and Dr. Calvin Jones Hwy is maintained by NCDOT. The traffic signals in Wake Forest were recently evaluated in a DOT project to optimize the signal system so it is likely that this signal has been evaluated recently. To get more information concerning why there is not a right turn signal or if NCDOT would be willing to evaluate the signal to determine if a right turn arrow is warranted, please contact them at: https://www.ncdot.gov/contact/Pages/default.aspx.