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Cars and Transportation
Reply to "Why do cars roll backwards before going forwards in traffic?"
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[quote=Anonymous][quote=Anonymous][quote=Anonymous][quote=Anonymous]I have a crappy old car with an automatic transmission. It will roll back on hills because there is so much slip in the torque converter at idle. My friend has a Civic with a manual transmission. He gets bored at traffic lights and doesn't use the brake when waiting at a red light on hills; he balances the clutch/throttle to hold his position. I think only men do this.[/quote] I do this too sometimes. I’m a female.[/quote] That's a great way to burn out your clutch prematurely. As for the OP's question, it can also happen with automatic transmissions if the hill is steep enough. It's a simple physics question of whether the force of gravity acting to push the car backward is greater than the amount of torque passed through the transmission at the engine's idle speed. [/quote] I know. But it’s a little addictive.[/quote]
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