Know-How Exchange : Research/Metrics

You might want to start here: https://www.cia.gov/library/publications/the-world-factbook/ ... but first, define "emergency" and then decide if the vehicles include military vehicles as well civilian and municipal.

Direct your question to a professional research librarian.

Yeah, you do need to define emergency vehicles, as this can change the numbers a lot.

You then can start doing searches that are related and would let you estimate thee number of emergency vehicles. For example, Wikipedia has a list of number of police officers for most countries in the world at https://en.wikipedia.org/wiki/List_of_countries_by_number_of_police_officer.... You can estimate how many police cars there are related to police officers to get an estimate of number of police cars.

And here was an estimate of number of fire stations in the US: https://www.answerbag.com/q_view/2123059. Should be at least 1 fire truck per fire station (likely more).

And here is an answer on how many fire trucks are produced in the US each year: https://www.ask.com/answers/10218401/how-many-fire-engines-are-sold-every-y...

These links may point you in the right direction -

The Departments of Motor Vehicles. You will find them listed at: https://www.dmv-department-of-motor-vehicles.com/

The National Highway Traffic Safety Administration. You'll find them here - https://www.nhtsa.dot.gov/

The AAA (American Ambulance Association) - https://www.the-aaa.org/

You may find that people like this can help you?

https://sites.google.com/site/unitedstatesemergencyvehicles/

They're fans, so are likely to be knowledgeable.

Does this help any?

There are a lot of Emergency Vehicles in the Us like provide out-of-hospital acute medical care and Land Ambulance or many more emergency vehicles.