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.
The corridor has about 66 road-rail crossings. Of these, 12 are overpasses, 38 are public street-level crossings, and 16 are private street-level crossings. About 388,000 vehicles per day cross the tracks, and this number is estimated to increase to 560,000 vehicles per day by 2021.
With the future increases in both train traffic and vehicle traffic, the existing street-level rail crossings present challenges to both rail operation efficiency and road network efficiency for the surrounding communities.
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.