Landscaping has been done to clearly separate pedestrian spaces from the roadbed.
From the theepochtimes.com
In ten minutes we saw the first casualty-a peasant lying bleeding near the roadbed.
From the time.com
A roadbed for Riverside Drive along the Maumee River is graded and awaits pavement.
From the toledoblade.com
Frequently, just the roadbed needs to be replaced and not the steel beams.
From the denverpost.com
Over the weekend, crews re-striped the roadbed and made final inspections.
From the ocregister.com
On this day, Zelinsky has chosen a location off an old roadbed at 28 feet.
From the denverpost.com
The first would be to simply limit the height of a building's roof above the roadbed.
From the heraldtribune.com
Engineers were examining the track to ensure slope and roadbed stability.
From the thenewstribune.com
At night it freezes again, heaving the roadbed up into ridges like a freshly plowed field.
From the time.com
More examples
A bed supporting a road
In highway construction, the graded portion of a highway within top and side slopes, prepared as a foundation for the pavement structure and shoulder.
The finished surface of roadway upon which track and ballast rest.
The built up "earth" upon which track is laid. In the modeler's world, we usually use cork or foam roadbed which is commercially available in hobby stores for this purpose.
The foundation layer of earth on which the track is built.