Tolls Vehicles are tolled based on the following classifications. Vehicle with 2 axles and an axle height, as measured vertically from the front axle, of more than 1.1 meters Vehicle with 3 axles or an axle height, as measured vertically from the front axle, of greater than 1.1 meters. A toll is levied on southbound vehicles crossing the 25 de Abril Bridge which links Lisbon with the south bank of the Tagus River at the end of the Vila Franca de Xira expressway. Major credit cards are accepted but entail a surcharge of 100 Esc. Leaded gasoline has an octane rating of 98.
Unleaded gasoline is called gasolina sin plomo or gasolina sem chumbo.
Unleaded super gasoline has an octane rating of 95 or 98. It's illegal tocarry spare fuel. The minimum age of a driver is 17 years. Children must be at least 12 years of age or in a safety seat to sit in the front seat. The legal blood alcohol limit is 50 mg.