While a flat tire is certainly an inconvenience, it does not have to ruin your day. As long as you have the proper tools with you, it is quite possible that you can get it replaced and be on your way in no time at all. Following these steps should help you along the way.
It is very important that you pull over to as safe a location as possible before you get out of the vehicle. You do not want to be working on the car with cars flying by you. If you can get into a parking lot, that is probably the most ideal place for you.
Hazard lights are also helpful as you set out to replace a flat tire. Turn them on so that vehicles around you will know that something is wrong. This will allow them to avoid you and keep you safe.