Between Taschereau Blvd and highway 30 there a few speedtrap.
Going south (Bt-Bruno) there’s is one right before you get to the Promenade St-Bruno exit. They usually hide of the road behind a guardrail.
Goin North (Longueuil) Be careful approaching Blvd Edouard underpass (where’s the railroad cross). They hide just of this structure and there’s sometime a few patrol cars.
Also there’s another one going north just before you get on Taschereau. Watch out for the unidentified car in the parking to the right.