Here in the Los Angeles area of southern California we don't need snow or ice for that--a little rain will do the job. We get rain so infrequently that the local municipalities generally don't maintain the drainage systems until after it starts raining, so the water tends to pool on the roadways rather quickly. And most of the people driving on those roadways either creep along or drive too fast for the conditions (i.e., at their normal rates of speed) so, between the two, accidents start racking up like points on a pinball machine. And then everyone has to slow down to get a good look at the accident(s), so the freeways become parking lots...or mini-marinas, if the rainwater gets deep enough. lol
No Yankee here. Just grew up in a southern state were snow and ice happened a little more regularly.
