MS of bilingual "No Stopping" sign. MS of 45 mph speed limit sign, cars whizzing by in extreme foreground. MSs of "Exit 49" sign, of highway service road sign, highway east, highway north. MS of entrance to Laurentian Highway, sign to that effect, traffic speeding on its way. Various MSs of flashers on top of truck, of car flashers. Shot of "Walk-don't walk" signal, traffic light above it. CU of illuminated man indicating permission to walk. Shot of bilingual sign pointing to Champlain Bridge, of bilingual "no-left turn" sign. Shot of traffic on Dorchester Boulevard (René-Lévesque Boulevard). Several shots of busy traffic on Dorchester Boulevard, cars heading for and past camera.