glazed frost वाक्य

Authorities told the one million citizens of the capital to stay inside as much as possible Thursday because accidents caused by glazed frost had overwhelmed emergency services.
In the city of Manchester rain on frozen ground had overnight caused glazed frost which had largely ( but not completely ) gone by morning, and at midday the clouds were running fast from the south; the January snowfall was melting fast, but the pre-Christmas snowfall, which was trodden had half thawed to slush and then frozen hard to solid ice overnight, was slower to melt.