This article is from the Bulgaria FAQ, by Dragomir R. Radev firstname.lastname@example.org with numerous contributions by others.
(by Plamen Bliznakov), last updated: 06-Apr-1994
Bulgaria is connected with neighbouring countries by a broad network of
motorways. Motorists entering the country are required to provide
valid driver's license (a regular US driver's license is sufficient),
car registration, and an insurance policy covering third party liability
known as the "green card". The latter can be obtained at the border,
but buying it in advance typically costs less.
Gas stations in Bulgaria are located 25-30 kilometers (15-20 miles)
apart. Hours of operation in most cases are 6 a.m. (6:00) to 10 p.m.
(22:00). Few gas stations in big cities and key junctions are open 24
hours a day. Unleaded gasoline is available at the border checkpoints,
in Sofia and the large Black Sea and mountain resorts, and along the
Speed limits : for cars - 60 km/h (37 MPH) within city limits,
80 km/h (50 MPH) on roadways outside cities and 120 km/h (75 MPH)