dolmus - yellow vans that look like big taxis, but they only each run a certain route between two locations (listed on the front of the van), they have to be waved down (or sometimes they slow down and honk at you to see if you want a ride) and when you get on you say the location you want to get off and he tells you the price (it varies according to where you got on and how far you want to ride it, almost always under 5 lira (unless you are crossing the bridge)). these are somewhat difficult to deal with if you dont have a turkish speaking person with you, but it is an option.