this they have decreased the cost of fares in an attempt to encourage more people to use public transport. In 2008 Beijing introduced restrictions on the number of cars on its roads in attempt to reduce congestion and pollution during the Olympic games period. They did this by adopting odd-even traffic restriction on alternative days. Cars with number plates ending with odd numbers were restricted one day and the next day cars with number plates ending with even numbers were restricted. Drivers who were unable to use their cars did not have to pay road or vehicle taxes, costing the city around 1.3 billion yuan. On Feb 21, 2022, Beijing experienced its worst traffic in five years due to the beginning of school and reserved Olympic lanes remaining closed to the public. Urban public transportation Beijing has an extensive public transportation network of buses, trolleybuses, suburban rail and a rapidly expanding subway system. In 2021, 76.5% of commuters used public transit in Beijing. Beijing Subway The Beijing Subway now has 23 lines, of lines and 394 stations in operation. Subway travel is generally fast, clean, economical and during peak periods congested. Currently about 12 million journeys are made on the subway every day. By 2020, the city predicts daily ridership will increase to over 18.5 million journeys a day. A ¥3 minimum fare that rises according to the distance travelled applies to all lines, except the Capital Airport Express (¥25) and the Daxing Airport Express (¥10 - ¥35). The electronic commuter fare card, Yikatong is accepted on all lines. Beijing Suburban Railway The Beijing Suburban Railway, a suburban commuter train service, is managed separately from the Beijing Subway. The two systems, although complementary, are not related to each other operationally. Beijing Suburban Railway is run as part of the China Railway Beijing Group. There are 4 suburban railway lines currently in operation: Line S2, Sub-Central line, Huairou–Miyun line and Tongmi line. Bus, Trolleybus and BRT The Beijing Public Transport Holdings, Ltd. ("BPT") is the main bus and trolleybus operator in the city. It is owned by the city and, as of 2009, operated nearly 28,000 buses (including trolleybuses) on 882 bus routes and delivered 5.03 billion rides in 2009. in 2011, Beijing had more than 28,343 buses carrying over 13.39 million person/trips a day. Over 1,100 Dual-mode trolleybuses operate on 29 routes and is gradually being expanded to combat urban