fuller BRT deployment including a dedicated busway of , traffic signal preemption, and peak service headway as low as two minutes. After the opening of the West Busway, in length in 2000, Pittsburgh's Busway system is today over 18.5 miles long. The OC Transpo BRT system in Ottawa, Canada, was introduced in 1983. The first element of its BRT system was dedicated bus lanes through the city centre, with platformed stops. The introduction of exclusive separate busways (termed 'Transitway') occurred in 1983. By 1996, all of the originally envisioned 31 km Transitway system was in operation; further expansions were opened in 2009, 2011, and 2014. As of 2019, the central part of the Transitway has been converted to light rail transit, due to the downtown section being operated beyond its designed capacity. In 1995, Quito, Ecuador, opened trolleybus BRT and Morocco Marrakech(BHNS de Marrakech)in 2017 Corridors of 8 km (5.0 mi), of which 3 km (1.9 mi) is wired for operation as trolleybus. The TransMilenio in Bogotá, Colombia, opening in 2000, was the first BRT system to combine the best elements of Curitiba's BRT with other BRT advances, and achieved the highest capacity and highest speed BRT system in the world. In January 2004 the first BRT in Southeast Asia, TransJakarta, opened in Jakarta, Indonesia. , at , it is the longest BRT system in the world. Africa's first BRT system was opened in Lagos, Nigeria, in March 2008 but is considered a light BRT system by many people. Johannesburg's BRT, Rea Vaya, was the first true BRT in Africa, in August 2009, carrying 16,000 daily passengers. Rea Vaya and MIO (BRT in Cali, Colombia, opened 2009) were the first two systems to combine full BRT with some services that also operated in mixed traffic, then joined the BRT trunk infrastructure. Main features BRT systems normally include most of the following features: Dedicated lanes and alignment Bus-only lanes make for faster travel and ensure that buses are not delayed by mixed traffic congestion. A median alignment bus-only keeps buses away from busy curb-side side conflicts, where cars and trucks are parking, standing and turning. Separate rights of way may be used such as the completely elevated Xiamen BRT. Transit malls or 'bus streets' may also be created in city centers. Off-board fare collection Fare prepayment at the station, instead of on board the bus, eliminates the delay caused by passengers