(1) Whenever, as the result of additional traffic generated by a proposed development, the City Traffic Engineer determines the need for a traffic signal or regulatory sign, such determination being based on the Manual on Uniform Traffic Control, latest edition, the recommendation of the City Traffic Engineer shall be included as a staff recommendation to the approving agency (Planning Commission). If approved by the approving agency (Planning Commission) the developer shall be responsible for installing said devices and signs (or participation on a pro rata basis in a local improvement district).

(2) The minimum center-of-intersection to center-of-intersection spacing for new traffic signals shall be 1,320 feet for arterial streets, and 1,000 feet for collector streets.

When part of a Type III land use review, the Public Works Director or designee shall forward a recommendation on minimum traffic signal spacing standards to the approving authority. The recommendation shall be based on the progression analysis described below.

When not part of a Type III land use review, the Director of Public Works or designee may approve a variance from this minimum spacing requirement. Variance from the minimum signal spacing shall require a progression analysis that shows peak hour speeds are no less than five miles per hour below the posted speed(s). A Registered Engineer or Registered Traffic Engineer within the State of Oregon shall conduct the analysis, and all work shall be scoped by the Public Works Department prior to commencing a study and shall be consistent with section 10.461.