So do they always use vans for the photo radar up there? Last time I drove from the US border into Vancouver on 99 I saw several photo radar warning signs but never picked up a signal (never slowed down, and didn't get anything in the mail

. I couldn't figure out what was going on, because I assumed the photo radar units would be permanent. Which radar band(s) do they use? Does anybody know how much slack they give you?
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Dean
Santa Barbara, CA
1974 280C
1984 300SD