Light snow is creating slick road conditions and widespread school delays Thursday morning. Before sunrise, a dusting to a half-inch has fallen across southwestern Connecticut. The National Weather Service says snow is expected to end by 10 a.m. While major roads like I-95, I-84 and the Merritt and Wilbur Cross parkways are clear, the shoulders and exit/entrance ramps are snow covered. Secondary roads are especially slippery with local police reporting dozens of accidents. By 6 a.m., the state Department of Transportation reported no accidents on major roads, which are mainly wet.