referential pic to post below.

Allright, what you see here is my old street in Queens, NY 2 days after snow. I think we got all of 5-6 inches or so. Just to illustrate my point about the pack ice - look at the strip of sidewalk that was not shoveled. After 2 days of constant foot traffic, it is packed solid - and each night it would freeze up hard. Its about 2 inches or so thick. Thats when you learn the meaning of "following in anothers footsteps." The only way your not going to fall.