Palermo is served every weekday by a fleet of about 350 orange buses on more than 100 routes; day passes are generally the best value for money. Bus travel can be slow, especially as traffic congestion is common in Palermo. Hiring a car can be troublesome for the same reason and is only really worthwhile if used to explore the surrounding region. Taxis are available but can be expensive. Luckily, although Palermo is a fairly large city, most of the major tourist attractions are close together in the city centre and can be easily explored on foot.