Hold on for dear life when driving in Bulgaria. It is considered very hazardous to drive in this country due to several factors and the fatality rate is as high as the smoking rate (OK, we exaggerate here, but it is still pretty bad).
Bulgaria carries some classically European customs in addition to a few other local ways that may surprise the average traveller.
Bulgaria is one of south eastern Europe's most interesting destinations and not yet swamped by masses of visitors every summer. Thankfully the smaller crowds also mean petty crime is less common, but you can still run into trouble and pick pockets in certain areas; places not to be avoided.