The easiest way to get around Tel Aviv is on foot or by taxi. Taxi mini-buses (sheruts) follow the same routes as the public buses, often with more frequency, and are slightly cheaper on weekdays. The bus system itself is extensive with a fixed fare in the city centre. Taxi cabs are not of any particular make or model car, but do have rooftop signs and are plentiful. Fares are metered and more expensive at night.