It's happened a number of times this summer.
South Western Ambulance Service tweeted to say "In an emergency, every second counts."
The service says it has struggled to reach patients several times this summer due to parked vehicles.
They've issued advice asking people to allow at least 10 feet for emergency services vehicles to pass by safely.
'Red' alert in Cornwall as strong winds become risk to life
Flood risk in parts of Devon too
Grit situation 'risks injuries' in Cranbrook
Many roads not 'adopted' by district council
Residents to quiz council on roundabout upgrades
A revamp of Manadon Roundabout could be on the way
North Devon foster carers could be exempt from council tax
North Devon Council looks to help its 36 foster families
Supporting vulnerable a priority amid gas outage
List made of those needing urgent support
Concerns for missing Devon man
Corey Wade was last seen three weeks ago
