The ambulance service has issued a warning to people hosting Platinum Jubilee street parties this bank holiday weekend.
Celebrations are taking place across the region to mark the Queen's 70 years on the throne.
Hundreds of neighbourhoods have been given permission from their local council to close their road in order to host a street party.
However even if tables and chairs are being laid out and games being played in the street, it is vital emergency vehicles are still able to get in and out in the case of an emergency, says the North West Ambulance Service (NWAS).
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On their Facebook page they said: "Have you and your neighbours planned a street party for the #JubileeWeekend?
"Don’t forget that a medical emergency can happen to anyone at any time – we hope it doesn’t but if it does, please help our ambulance crews get to people quickly this #BankHoliday.
"Make sure there is space wide enough for an ambulance and other emergency vehicles to pass in and out with no obstructions."
As well as those events licenced by local authorities, many more informal gatherings are expected to take place on the two Jubilee bank holidays on Thursday and Friday as well as on Saturday and Sunday.
The Department for Levelling Up, Housing and Communities, says even if residents don't have formal permission, they can still host a "street meet" reports Birmingham Live.
However, the road must be kept open all times they say.
“We want celebrations marking the Queen’s historic 70-year reign to be the biggest and best, and for as many people as possible across the nation to get involved
"Councils should accommodate short notice requests where reasonably possible, but if residents are not able to close their road they can plan a simpler ‘Street Meet’.
"This can keep the road open and be organised on private land, such as a driveway or front garden, without any requirement to fill in council forms.”
