Section 2(1)(m) in The Motor Vehicles (Driving) Regulations, 2017
(m)"road" includes bridges, tunnels, lay-bys, ferry facilities, interchanges, roundabouts, traffic islands, road dividers, all traffic lanes, acceleration lanes, deceleration lanes, median strips, overpasses, underpasses, approaches, entrance and exit ramps, toll plazas, and a road under construction, but does not include any private road;