All seven of Barbados's primary Highways begin close to the City of Bridgetown, in the Parish of Saint Michael. They all fan out to the north, south and east to other parts of the island. Driving is done of the left-hand side of the road with a speed limit of  in built-up areas. The speed limit on the ABC Highway is generally 80 km/h (50 mph) except in built-up areas. Water transport is regulated by the Barbados Port Authority.