Bus directions are available through Google Maps and through most public transit providers. Maps and schedules are also available through most providers, often in online and paper formats. Google and some public transportation services offer mobile apps for on-the-go directions.
Google Maps Transit covers major cities around the world and provides directions by bus, train, subway and light rail. Users may customize directions based on factors that include the departure time, walking distance or the number of transfers.
Interactive trip planners are offered on most public transit system websites. Some cities also provide bus directions by phone, as well as real-time mobile or desktop updates regarding arrivals, departures and delays.