Road-rail

[...] the main road movement is alongside the most heavily occupied sections of railway, so that road-rail competition is inescapable.

a combined road-rail bridge

A proposal to construct it as a road/rail bridge was considered but ultimately rejected on the grounds of cost.

Intensive study is being devoted to finding a cheaper and quicker means of road-rail transfer and to improving the payload/tare weight of containers, and there will be more containers of special types.

"We have some areas on the Mallaig line where you have no road access at all," Phil explains. "This is where the road-rail vehicles come into their own."