1970s. In 1970, CMB started fitting more powerful engines to its Guy Arab double-deckers, giving them enough power for climbing up slopes and servicing areas such as the Mid-levels. In the same year, CMB also decided to convert its Guy Arab MkV single-deckers to double-deckers after one caught fire in 1968. Some of the short-wheelbase buses were rebodied with low-height double-deck bodies, enabling them to provide service on the Victoria Peak. In 1971, CMB carried out tests of one-man-operated (OMO) bus with the post of the conductor eliminated. Passengers paid their fare by putting coins into a collection box. The tests were considered successful and so CMB converted all their buses to OMO by 1976. KMB had also likewise started to operate OMO buses since 1972. In February 1972, CMB received one Daimler Fleetline rear-engine double-decker for evaluation, and subsequently started to introduce more Fleetlines in 1973. KMB also introduced their first Fleetline in 1974. In August 1972, Cross-Harbour Tunnel connected Kowloon and Hong Kong Island. KMB and CMB jointly operated 3 new routes servicing both sides of the Victoria Harbour. The three routes are: 101: Kwun Tong (Yue Man Square) – Kennedy Town, 102: Lai Chi Kok – Shau Kei Wan, and 103: Wang Tau Hom – Pokfield Road On 1 April 1974, New Lantao Bus Co.,(1973) Ltd. became the third franchised bus company in Hong Kong. Late 1970s: The Fleetline and the Victory In the 1970s, CMB and KMB purchased almost 800 Fleetlines. With the new 3+2 seating arrangement in both decks, these Fleetlines could carry more than 120 passengers. Due to the high capacity, the Fleetlines were usually allocated to highly demanded cross-harbour routes. However, the Fleetlines in Hong Kong were unreliable and poor in climbing slopes, so CMB and KMB had to find the alternatives. CMB evaluated the Ashok Leyland Titan, Scania Metropolitan and Volvo Ailsa B55, but these models were not successful. KMB evaluated the Guy Victory J modified by Bus Bodies (South Africa) Limited and Dennis Jubilant. Later British Leyland reacted by producing the Leyland Victory Mark 2, which was modified from the Victory J chassis and, like the Dennis Jubilant, had high-powered engine and automatic transmission. KMB and CMB purchased large number of Dennis Jubilant and Leyland Victory Mark 2 buses in late-1970s/early-1980s. In 1975, KMB introduced its coach services, with the aim to attract more wealthy people to travel by coaches instead