Overheating is a delicate problem that cannot be easily solved by just pouring in coolant. The safer solution to this is to turn off the engine and wait for it to cool down before adding the coolant.
The other is best done when the engine has not yet overheated but the gauge is indicating that it is going there. Leave the engine on and then take off the cap of the radiator. If you are looking for complete detail about car repair services then hop over to this source https://wollongongmechanical.com.au/tyres/.
If steam is already coming from it, do not touch anything and turn off the engine because hot water may come spraying out from it when it is opened and injure anyone in the vicinity. This is actually not a good idea if the driver has no idea what to do.
Always check the gauges while driving to see if something is amiss. Check the radiator for coolant level as well as brake fluid and other fluids levels regularly. Feeling something bumpy or gritty when driving is also another indicator that something is wrong with the vehicle.
A flat tire can make the vehicle difficult to turn or maneuver as well as make the ride bumpier. When this happens, pull over to the side and check the tires. Do not attempt to run on a virtually flat tire because this can shred the tire and damage the rims if the distance is quite far to the car repair garage.