Can anyone help me with a sample code for a smart ambulance system where the location of the ambulance is tracked using GPS and ESP32. The ambulance location is viewed using Arduino Cloud and dashboard.
Why would this be any different to any other vehicle tracking system - there are plenty of examples of that online.
You will need some sort of cellular connection to get the data to the cloud from a moving vehicle...
You can consider using the Arduino IoT Remote mobile app, at least for a quick prototype. This way you don't need any custom hardware, but your smartphone will stream its GPS location to a dashboard. See here:
If you want to build a custom device, you'll need a cellular connection and a GPS module.
The most plug-and-play solution is to combine a MKR GSM 1400 with a MKR GSM Shield. This way you don't need any wiring or soldering, and you just need a USB cable to power the system. Writing code for this solution is easy, as there are many tutorials that show how to read the GPS location and how to display that in a cloud dashboard:
Keep us posted on your progress!
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I'll be using a WIFI network with the esp32
So how do you expect that to track the location of a vehicle? 
Or does the vehicle already have an internet connection (cellular, or whatever), and you will just be connecting over WiFi to that?
Note that 2G and, especially, 3G are being phased-out across the world - so probably not a great idea to be starting a new project on it now...
The vehicle will have a wifi modem in it
If you have a Wifi modem is even easier 
In my reply above, just change the MKR GSM 1400 board with a MKR WiFi 1010. That way you'll be able to plug a MKR GSM Shield on it.
(Then of course, any combination of any WiFi board with any GPS module will work with Arduino Cloud, but it will require some wiring and assembly and this is why you can consider a MKR shield+board combination to get something working quickly)
OK - a bit of critical information you failed to mention!
However, the cloud end neither knows nor cares how the data is transmitted - the API remains the same irrespective of the transport!
That's the beauty of the OSI Layered Model ...
I m using ESP32 can you provide a sample code for that?
Have you tried searching?
Did you look at the examples @alranel gave?
If you want someone to do the project for you, you could post here:
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