Driving in Tehran is a bit tricky. The rules are pretty much broken. It is not really safe. You just have to be very careful and calm. If you are not calm or a patient person, then driving wouldn’t really be a great idea. There’s a lot of traffic. Cars can suddenly come out of nowhere and they will come too close to you. Motorcycles are a different story. They go really fast and you have to let them go through. No matter whose fault it is, if you hit them, it is your fault. Oh and seatbelts aren’t required, only in highways! And kids under the age of 13 can sit on the passenger seat.