It's another busy day along Interstate 94 for Indiana State Police troopers, who responded early Tuesday to several crashes may have been caused by black ice.
No serious injuries were reported in a crash on eastbound I-80/94 near the Calumet Avenue exit in Munster or another crash on eastbound I-94 near the Indiana Toll Road, police said.
Black ice may be to blame, because troopers were calling for salt trucks.
Police said drivers should allow extra time for travel, slow down and avoid following other vehicles too closely. Give emergency vehicles and snowplows plenty of room to work.
Tuesday marked the second morning of slippery conditions along the Borman Expressway, which saw delays much of Monday morning because of black ice and an expansion joint that needed to be patched in Hammond.
High temperatures in the low 30s were expected Tuesday, with mostly cloudy skies. Rain or drizzle could begin after noon Wednesday and continuing into Thursday morning's commute, according to the National Weather Service.