The world's largest annual human migration, the Spring Festival travel rush, will be even larger this year.

People will make a total of 2.98 billion trips nationwide during the annual travel peak, from Jan 13 to Feb 21, up 2.2 percent year-on-year, according to an official forecast released on Wednesday.

Twelve percent of trips will be made by railway, 84.6 percent by road, 1.4 percent by water and 2 percent by air, according to a report by the National Intelligent Transport Systems Center of Engineering and Technology in China, the National Development and Reform Commission and the Ministry of Transport.