Traffic signs are more or less the same as those in other European countries. Warning signs are triangular and have a red frame around them set on a yellow background, signs of prohibition are round and have a red frame against a white background, and signs directing the traffic are blue.
Although on the whole road signs are adequate, if you want to drive safely you’d better not count on them one hundred percent. Consider the first 100 kilometres a trial period in which you familiarise yourself with the Greek roads, and be very careful.
Keep in mind that, more often than not, speed limits are unreasonably low. This means that you will frequently see signs on the national roads or the main provincial roads that impose a speed limit of 40, 30, or even 5 kilometres per hour! These signs are the easiest way the authorities have found to prevent accidents at the most dangerous sites and should be looked upon as danger signals. However, do not take the speed limits too seriously, or you may be run over by a bus!