KING COUNTY - Another morning with cold temperatures causes more problems on the road.
Investigators say black ice was to blame.
The biggest problem area was westbound on I-90 near Fall City.
A car hit the black ice and flipped over.
Firefighters were responding to the initial crash, when another car hit the ice and plowed into the back of the firetruck.
A firefighter was pinned between the two vehicles. It looked bad, but the firefighter only suffered minor injuries.
Police say the crash serves as a reminder: you can't see black ice so if conditions are cold enough for it to form, slow down.