Ice storms are uniquely dangerous for roadside service. The same conditions that cause vehicles to slide off the road make service trucks unable to safely reach customers.
During active ice events, most roadside operators suspend service for safety. The risk to the technician of getting out of the truck on ice exceeds the value of the service call.
If you slide off the road during an ice storm: stay in the vehicle, run the engine intermittently for heat (check exhaust isn't blocked), keep your phone charged, wait for conditions to improve.
Post-ice (after temperatures rise and roads salt), demand surges. Recovery operations clear vehicles from ditches and shoulders in the order they came in.
Best winter behavior during ice events: don't drive. The vast majority of ice-related roadside calls result from people attempting to drive when they shouldn't have.