Driving in Turkey needs some getting used to as the rules are 'looser' than in US or Europe. In a previous post after a similar question I gave a couple of points to consider, I'll repeat them here :
* Keep your eyes open and never assume people will follow the well known traffic rules such as stopping at red lights!! and don't assume they have seen you coming. Expect a car, lorry, minubus, bus, tractor, motorbike from everywhere.
* Watch out for lorries coming towards you, there is usually someone overtaking them without looking your way.
* People sometimes drive very impatiently driving very close to you from behind and beeping, just ignore them and let them go.
* Watch out for the minibuses (Dolmus) and coaches, they can stop anywhere anytime without warning to take or leave passengers.
* When you are more used to driving, drive confidently, don't expect people to give you way, you will need to be firm.
Otherwise you'll be OK:-) Seriously once you get used to the style of driving it feels natural.
Hope this helps,
Kozano