To begin with you have to bear in mind that unless you understand the culture and thinking of Greek drivers you have little chance of anticipating their moves. So let's begin with some simple facts.

Most of the fatalities happen on the mainland so if you are living on an island you cut down the odds.  Most fatalities on islands involve tourists and alcohol so if you stay out of those categories you cut down the odds.

Now to understand why a Greek would behave in a way you consider insane, unreasonable or whatever, consider the following.  Greek drivers generally are following Greek logic not your logic so you have to come to grips with that.  For example, a stop sign means stop if there is traffic approaching from your right or left.  Why would you stop if there isn't?  The same rule often applies to a red light.  Yield signs (which are rare) always mean the other guy should yield to you.  Every 2 lane road in Greece has 3 lanes.  The one in your direction, the one in the other direction and the invisible one in the middle that you use for passing a bus uphill on a blind corner. 

When you stop at a traffic light and a car is in front of you, you blow your horn when the light turns green, before you even touch the throttle.  When you see a friend in the street you stop in the middle of the street to chat. 

After all you were in front so your needs come first.   If you want to park but there are no parking spaces available, where else can you park but in the middle of the street?  If you want to go into a store and no parking is available right in front of it, thus forcing you to park in the street, why would anyone expect you to park further up the street in front of a store you don't want to go to?  When the white bands designating a pedestrian crossing area were painted on the streets about 10 years ago, why did no one tell anyone that you have to stop for pedestrians crossing?  If they did tell you, how can they expect a pedestrian to stop a car?  The car is bigger than them.   All cars in front of you should signal their turns.  All cars behind you should not expect you to signal your turns.

Now for a few words on buying a car or bike.  Remember Chapter 1 on Bureaucracy?  If you don't, click on the link to my other article in the Additional Resources table above.  That will give you some idea of what is coming.  For starters we have to divide vehicles into 3 categories.  Bikes under 90cc, over 90cc and cars.

A scooter under 90cc is pretty straightforward.  You and the owner go to the appropriate office (usually in the Police Station), sign a few cards, stick on some stamps, pay a small fee and it is done.  Shouldn't take more than 2 or 3 visits.

A bigger scooter or motorcycle gets more complicated.  Your best bet is to hire someone with experience to do the transfer for you.  You can do it yourself but be prepared for some interesting visits to various government departments.

There is that simple logic again.  Now watch this logic.  In most countries people try to avoid paying income tax and feel they should pay as little tax as possible.  In Greece every Greek believes they should pay no tax at all!  Accordingly, they don't just fudge their income a bit, they fudge it a lot. 

I have known businessmen who have been in business for 10-15 years and have yet to make a profit!   They might own 4 big hotels and still not declare a personal income of much more than the cleaning lady.   Now the Greek government isn't stupid so they thought of this brilliant and perfectly logical way to determine what the real income was.