The city of Beijing will add 800 barrier-free taxis in 2015 and replace 70 old taxis, the municipal transport authority said on Tuesday.
Four-tier alerts--blue, yellow, orange and red--will be issued on "heavy pollution" days, according to Beijing's environmental protection bureau.
Duplicate ID numbers are a historical problem that emerged in the 1980s when the system was launched.
Gradually, all the coal-fired power plants will be phased out in Beijing and replaced by either gas-fired or other clean energy-powered plants.
The number of new energy vehicles in Beijing is expected to increase as favorable policies are put into place, such as free parking and discounted tolls, to encourage green transportation and reduce air pollution.
Three new rail lines will be opened this year, in the municipalities of Beijing and Tianjin and Hebei province, to improve regional integration and development, an official from the Beijing railway authority said.
Beijing will reduce coal consumption by 4 million tonnes, shut down 300 factories and retire 200,000 heavily polluting vehicles in 2015.
Beijing is determined to keep its population at less than 23 million by 2020 by moving out industries that are not suitable for the capital and adjusting economic structures, deputies said on Friday.
The IOC evaluation commission will visit Beijing from March 24 to 28 before a final decision is scheduled to be made at the IOC Session in Kuala Lumpur on July 31.
Beijing will levy new fees for discharging dust into the air on all construction sites beginning Sunday in a move designed to control emissions of the most harmful pollutants, the city's environmental watchdog said on Friday.
Sales of fireworks fell 41 percent in Beijing during the Spring Festival holiday, reported local newspaper on Wednesday.
The Beijing city government is strengthening safety measures for Spring Festival following the deadly New Year's Eve stampede in Shanghai.
Beijing-based BAIC Motor and Foxconn, the world's largest electronics contractor, launched a joint electric vehicle rental service on Sunday.
Beijing will pilot a "point system" in east suburban district of Tongzhou to allow its migrants to claim permanent resident permits or "hukou".
Functions of Beijing's public transportation card will soon be incorporated in a wearable device, as local authorities aim to adapt to the "smart" era.