In Toronto we have pumpers, rescues, squads for trucks. Aerials, platform ladders and tower ladders. To the best of my knowledge, only our rescues and general duty squads have car extrication equipment, with the squad carrying more and more specialized versions. Our pumpers do medical calls, fire calls and other general duty calls, they will respond to mvc's but don't have extrication gear. Squads are called out for specialized rescues, and auto extrication.
Aerials and specialized squads don't carry extrication equipment, but may still respond to mvcs