Traffic Light Synchronization In Sherwood Park

Residents have been concerned about sometimes erratic traffic light synchronization on intersections throughout the park.

The signal coordination at the Highway 16 and Clover Bar Road intersection was recognized as an issue. Strathcona County and Alberta Transportation worked together to resolve this because the signal is under Alberta Transportation jurisdiction. The old provincial owned controller, which does not communicate with our system, is being replaced with our own newer controller and integrated into our system to be synchronized with our lights by the end of this month.

Long red light times for various intersections have been reported by residents for the past two years. A thorough review of the traffic light sequencing throughout Sherwood Park has been completed. The maximum planned cycle length is in place during the morning peak at Baseline and Clarkdale. The maximum cycle time at this intersection will not exceed 140 seconds or 2 minutes and 20 seconds. Cycle lengths vary based upon the road, time of day, and day of the week, however when all systems are functioning, a vehicle will not wait more than 2 minutes and 20 seconds for a light to change. The only exception to this sequencing would be a result of malfunctioning equipment or ineffective equipment due to weather. Examples include video detection equipment clogged with snow or a vehicle missing the roadway detection loop. Should a vehicle not be detected at an intersection, the vehicle will wait until the sequence is activated. I urge residents to report this at 780.464.8279 so that engineering can correct it as soon as possible.

The "All Flashing" traffic light sequence is set for midnight. The rationale behind the time selection is a reflection of best practices and consistency throughout Sherwood Park. A factor driving the time selection includes vehicle and pedestrian volume. Based on business hours and commuting traffic there is a high probability of pedestrian vehicle conflict prior to midnight. Where pedestrian traffic may not be considered as much of a factor, all traffic lights that are programmed to the all flash sequence need to start at the same time for consistency and perception of a well planned and functioning traffic system as a whole.

The engineering department reviews traffic signals and timing on an ongoing basis and are working towards establishing key performance Indicators for defining service level standards.

I hope that these improvements will make driving more efficient and pleasant for our residents throughout the year.