Alright, everyone, I have some questions in regards friction when rounding a flat curve and was hoping to get some help with it. For that intent, I've borrowed a couple of posts from another old thread on the topic of centripetal force. Hope the authors don't mind. The textbook I'm using actually says the vehicle wouldn't skid, but would just negotiate a turn not as steep as if it would've gone slower. Does that mean that the vehicle will, should it exceed the allowed speed, NOT go out of the turn tangentially, but rather in a curve that will, due to being a part of a circle with a bigger radius, eventually lead it off the road. Oh, and could someone shed more light on the difference between those three types of friction in a flat curve. Say you're travelling slowly. Then the only friction involved is static, right? But what happens when you exceed that speed limit and your wheels keep on turning? Is the static friction still the one that's applied? Or does kinetic friction enter the frame here? If yes, does it substitute static friction or just supplement it? And the direction would in any case still be towards the centre of the (bigger) circle, correct? And one last question. If we suppose rolling friction isn't neglibile, is its direction also towards the centre (because while I suppose the wheels are in fact turning forward, that is tangentially to the circle, the change in their velocity points towards the centre) and not tangential to the circle? Thanks in advance, guys and girls.