Driving conditions after expected to be difficult tonight (Wednesday) and during rush hour tomorrow morning, warn fire officers.
Conditions could be similar to those experienced across Devon and Somerset at the end of last month, with heavy rain falling on already saturated ground.
During one 24-hour period in November alone, fire crews in Devon and Somerset attended 51 incidents involving vehicles stuck in floodwater. For days after the flooding, crews were still being called to vehicles stuck in floodwater after motorists had ignored or moved road closure signs.
Fire officers are asking residents not to drive through floodwater, as they could be putting themselves or others in danger. Attending incidents which could be prevented may also divert fire crews from other incidents where lives are at risk.
Area Manager Alex Hanson said: "It is impossible for motorists to tell how deep water is or the condition of the ground beneath. There is a significant risk to life if motorists become stranded.
"We recommend that people do not make non-essential journeys tonight (Wednesday) or tomorrow morning if they live in areas prone to flooding.
"If they do see floodwater on the road, they should not attempt to drive through it but should try to find an alternative route. And if a road has been closed, it is for the safety of the public and closure signs should be respected."
Fire crews from Devon & Somerset Fire & Rescue Service will continue to attend incidents where lives are at risk during adverse weather conditions.