U-Bahn and S-Bahn (Metro and Commuter Rail): Efficient, clean networks covering the entire city and airport connections. Single tickets cost €2.75-€3.50; day passes cost €7-€8. The Frankfurt Card provides unlimited transport plus museum discounts. Taxis are metered and moderately priced. Cycling is popular with extensive bike lanes; rentals available throughout the city. Airport connections via S-Bahn (S8/S9) reach the city center in 11 minutes for €5.50. Walking is pleasant in neighborhoods; the city center is very pedestrian-friendly. Rental cars are unnecessary; public transport exceeds most cities' efficiency.