Q&A - CVSE Authority
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Do Commercial Vehicle Safety and Enforcement (CVSE) officers have the authority to pull over and ticket non-commercial vehicles for traffic violations such as speeding or running a stop sign?

I was returning to Calgary from Seattle through Trans Canada 1 west of Golden. The road conditions were poor, with a few inches of fresh snow, and visibility was poor due to blowing snow. Traffic had slowed to around 50 km/h. I watched other drivers pass semis behind me which were moving at around 30 km/hm due to the extremely poor visibility from driving behind them.
I witnessed a discussion the other day about the difference between the charges of driving over .08 BAC and driving impaired. Over .08 BAC is obvious but what actions or behaviours can bring an impaired driving charge? Does it specifically refer to alcohol and drugs. Can a person be deemed impaired by illness, say dementia, or impaired by say a neck brace or cast?
The case of Stevanovic v Petrovic involves playing chicken by a driver who was certainly old enough to know better. Mr. Petrovic decided to do this with his friend Mr. Stevanovic who was standing in the street waiting to be picked up. The resulting collision caused a serious leg injury.