Section 290-RICR-20-00-3.6 - Engineering StudyA. Prior to the installation of an Automated traffic violation monitoring system at any intersection, a registered professional engineer licensed in the State of Rhode Island shall perform an Engineering study and prepare a report Certifying that the Traffic signal and intersection under consideration have been inspected and are free from all deficiencies that may contribute to unintentional red light running behavior. At a minimum, such professional engineer shall Certify the following with regard to the Traffic signal and/or intersection under consideration: 1. The intersection meets Traffic signal warrants as outlined in the Manual on Uniform Traffic Control Devices (2009), incorporated above.2. The yellow times conform to yellow times recommended by the Institute of Transportation Engineers Traffic Control Devices Handbook.3. The yellow times have been adjusted for eighty-fifth percentile (85%) speed and steep grades approaching signal.4. The all-red clearance intervals have been set to a minimum of one second alternatively, if the Traffic signal controller does not have all-red clearance capability, the yellow time must provide not only an appropriate change interval, but also an appropriate clearance interval, as specified in the Traffic Engineering Handbook (2016) and the Manual on Uniform Traffic Control Devices (2009) ( 23 C.F.R. Part 655, Subpart F), incorporated above.5. The Traffic signal faces are free from all obstructions and are visible for the appropriate distance, as specified in the Traffic Engineering Handbook (2016) and the Manual on Uniform Traffic Control Devices (2009) ( 23 C.F.R. Part 655, Subpart F), incorporated above.6. The horizontal and vertical locations of the Traffic signal face meet the requirements of the Manual on Uniform Traffic Control Devices (2009) ( 23 C.F.R. Part 655, Subpart F), incorporated above.7. Traffic signage in the surrounding area is visible, legible, and does not require motorists to divert attention from the roadway.8. The stop line is clearly visible and located at the appropriate location as specified in the Manual on Uniform Traffic Control Devices (2009) ( 23 C.F.R. Part 655, Subpart F), incorporated above.9. Traffic signal timing is optimized to current traffic conditions so as not to frustrate motorists and encourage red light running.10. Traffic signal is functioning properly and, if Actuated, all detectors are working properly so as not to cause additional delay.11. Parking is prohibited for a distance of at least thirty feet (30') from the intersection approach.290 R.I. Code R. 290-RICR-20-00-3.6