Most main roads in Penang are served by bus. The buses in Penang are called Rapid Penang. If you arrive at the airport, you can take the bus to the jetty. The Jetty is Penang's main bus terminal. At the Jetty, you can take the bus to all the places in Penang. Bus 10 and 11 serves George Town. The rest of the buses have three digits. Buses going to Teluk Bahang and Batu Ferringhi have numbers starting with "1", buses to Air Itam start with "2". Those going to Bayan Lepas and Batu Maung start with "3" while those to Balik Pulau start with "4".
Taking the bus is not expensive, but have to wait, because there aren't many buses. We hope that the Government will put more buses on the road for the convenience of those without cars.