Metrobus is an Australian high frequency, high capacity bus network in Sydney that links key employment and growth centres. Metrobuses run every 10 minutes during peak periods, 15 minutes during off-peak weekday periods, and 20 minutes on weekends, with the intention of making timetables obsolete. Buses are painted in a distinctive red livery. All route numbers are prefixed with an "M". Under a planned standardisation of transport modes by Transport for NSW, the "M" prefix will be changed to "B".