Is an international driving permit mandatory?
Legal framework:
An International Driving Permit (IDP) is mandatory. This country accepts the 1949 Geneva Convention (1-year validity) and the 1968 Vienna Convention (3-year validity).
Rules of conduct in Turkey
Speed limit: 50 km/h in urban areas, 90 km/h on two-way roads, 110 km/h on dual carriageways, and 120 km/h on motorways (130 or 140 km/h on some new sections).
Blood alcohol level: 0.5 g/l for passenger vehicles, but ZERO tolerance (0.0 g/l) for drivers towing a trailer or professionals.
It is mandatory to have two warning triangles and a fire extinguisher.
The highway toll system (HGS) requires an electronic vignette.
Tips from easy-idp.org
"Driving is on the right.
In large cities like Istanbul, traffic is very dense and the local driving style can seem unpredictable and aggressive to unsuspecting drivers.
The horn is used constantly, not out of aggression, but to signal one's presence (especially before overtaking).
At roundabouts, priority is often (but not always) taken by whoever enters fastest, so be very vigilant.
National roads are generally in excellent condition, but beware of tractors or slow vehicles sometimes driving at night without lights."