China will invest more than CNY1tn ($146bn) to expand its subway train networks over the next five years.
The Chinese National Development and Reform Commission said the country's subway tracks will cover more than 3,000km by 2015.
China is expected to increase its subway networks to 1,400km in 2010 and spend CNY20m ($3m) on acquiring trains.
The move is intended to reduce traffic congestion and vehicle-related pollution on roads.
The country has approved the creation of 25 metro systems, according to businessweek.com.
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