East Japan Railway Co. will begin an environmental impact survey this spring in preparation for building a faster access line to Haneda airport from central Tokyo, according to sources on Saturday who also said the announcement of the study could come as early this month.

With the new line, the 15-kilometer journey from Haneda airport to Tokyo and Shinjuku stations will take about 18 and 23 minutes, respectively. Tokyo Station is a transit hub for bullet train services bound for regions throughout the country.

If it all goes according to plan, the new train line will be completed around 2029 after three years of the assessment surveys and seven years of construction work.