a straight staircase. Additionally, London Buses has previously specified that vehicles operating in London use traditional printed roller destination blinds, whereas in most other parts of the country, electronic dot matrix or LED displays are the norm on new buses. iBus All of London's buses use the London iBus system, an Automatic Vehicle Location system that provides passengers with audio visual announcements and is able to trigger priority at traffic junctions. The system was on trial in 2006, and was extended to all bus routes by 2009. References External links Local government in London Buses Transport for London Transport organisations based in London 1999 establishments in England