WHAT DETERMINES WHETHER A RAIL ALTERNATIVE REQUIRES SINGLE OR DOUBLE TRACK?
A double-track rail line provides more flexibility for operation. A commuter rail line could operate on single track if the headway, which is the amount of time between trains, is long enough. With its more frequent service, light rail service would require a double track. One option would be to begin with commuter rail operation on a single track and upgrade later to double track operation. If this approach is used, it may be advisable to acquire the property and plan for a double line from the beginning.
