Local buses travel along routes across the city and offer a relatively cheap means of transport. The destination is usually written on the front of the bus. Taxis are a popular means of getting around and can easily be hailed off the street. The most common taxis are yellow cabs, which are unmetered, and white cabs with orange stripes, known as taxi libre, which are metered and generally charge much less than the yellow cabs. It's best to negotiate a fare before getting in the vehicle or, if the cab has a meter, make sure the taxi driver has it switched on.Calling an Uber taxi has also become a popular option in Tijuana. A number of car hire companies are available in the city, and self-drive is a viable option. However, caution is advised due to safety concerns. Day visitors from California will find that most of the touristy parts of the city can easily be explored on foot, and it is unnecessary to bring a car over the border unless planning to go further south into Mexico.