I like to wait to see if Consuela gives me four open on the A/ice system.....
SAAB, and all you ERJ drivers know what I'm talkin' about.....
But if you're in a small GA airplane, find warmer air ASAP or land. I've inadvertently flown into icing conditions in a BE76 with a student. Not bad enough to get the stall warning at 120 knots, but seeing how much ice had accumulated on the tail made me soil my pants and thank god we were on the ground!