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Whoop-Up Dr Speed Variable Speed Limit Decisions

​If you're wondering how we decide when to raise the speed limit on Whoop-Up Drive back to 90 km/h after a snow event, here are some answers:

  • Once the limit has been lowered, we want to avoid the confusion that could result from moving the limit back and forth within several hours due to changing road conditions.
  • When conditions start to improve, some motorists want us to raise the limit back to 90 km/h immediately.
  • But even when conditions look good during the day, the risk of flash freezing on the bridge deck may still exist, especially early in the morning or late in the afternoon when traffic is heaviest.
  • Before we raise the speed limit, we want to be certain that road conditions and the bridge deck temperature have sufficiently stabilized that a speed limit reduction likely won’t become necessary unless the weather changes.
  • When it comes to the safety of motorists, if we err, it will be on the side of caution. Your safety is our primary concern.
  • We monitor the forecast and conditions and make the safest decision we can. While we hear from those who want the limit raised sooner, we also hear from many others want it to stay reduced to 60 km/h.
  • To provide some perspective, the speed limit reduction adds just over a minute to the Whoop-Up Drive commute.