road-rail

adjective4

1. •
   Relating to both road(s) and railway(s).

   • [...] the main road movement is alongside the most heavily occupied sections of railway, so that road-rail competition is inescapable. — 1962
2. •
   Accommodating both road and railway.

   • A proposal to construct it as a road/rail bridge was considered but ultimately rejected on the grounds of cost. — 2021
3. •
   Occurring between road and rail.
4. •
   Of a vehicle, able to be driven on both road and rail, being fitted with retractable railway wheels.

   • "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." — 2023