The Roberts Bank Rail Corridor consists mostly of single rail track and currently carries up to 18 trains per day, ranging from 6,000 to 9,500 feet in length. The volume of train traffic is expected to increase to 28–38 trains per day by 2021, and some train lengths are expected to increase up to 12,000 feet.
About 388,000 vehicles per day cross the rail tracks, and this number is estimated to increase to 560,000 vehicles per day by 2021.
In February 2007, the Roberts Bank Rail Corridor: Road/Rail Interface Study prioritized the optimal locations for investment in road-rail projects. Careful consideration was also given to selected road closures, network reconfigurations, and traffic management measures designed to maximize benefits to motorists, railways and neighbouring communities.
The study was a collaborative effort among Transport Canada, British Columbia Ministry of Transportation and Infrastructure, South Coast British Columbia Transportation Authority (TransLink), the Vancouver Fraser Port Authority, and the Greater Vancouver Gateway Council, with contributions from stakeholders such as corridor municipalities and railway companies.