sentences:  Some motorways operate a cash-free Via Verde system (Portuguese for Green Way) which is an electronic tag that is fitted to vehicles and automatically debits an associated bank-account with the cost of the journey made.To use these motorways foreign cars will need to buy a pre-paid pass, for 3 or 5 days or link their bank account to the system or buy a pre-paid toll card that uses a text message to link it to your vehicle registration number.Well-known roads are the A1, which goes from Lisbon to Porto and the A2, from Almada to the Algarve, or the A6, from the A2 at Marateca to the Spanish border, close to Badajoz.