ICE had no business being out that day,
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You should avoid driving on icy roads unless absolutely necessary, as it's dangerous for everyone, including emergency vehicles, which are also slowed by ice but must still respond. If you must drive, go slow, increase following distance, and if you see emergency lights, move over and slow down significantly (often to 10 mph below the limit) to give them space, remembering their large trucks also struggle to stop on ice.