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cross section of a road click to hear : cross section of a road

Road: thoroughfare connecting two geographical points, usually urban centers.
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See cross section of a road in : french | spanish
solid line broken line subgrade slope ditch subbase bank base course shoulder bed earth foundation embankment base surface course roadway

solid line click to hear : solid line

Line demarcating the edge of the roadway or, when in the center of the roadway, indicating that passing is prohibited.

broken line click to hear : broken line

Line demarcating the two lanes of the roadway and showing that passing is permitted.

subgrade click to hear : subgrade

Layer supporting the base course and the subbase and providing drainage.

slope click to hear : slope

Steeply sloped ground between the ditch and the bank and between the ditch and the shoulder.

ditch click to hear : ditch

Ditch parallel to the roadway; surface water drains into it.

subbase click to hear : subbase

Base of a roadway, made up of coarse compacted gravel, making the roadway solid and stable.

bank click to hear : bank

Natural land along the edge of the road.

base course click to hear : base course

Top foundation layer, made up of fine compacted material; the driving surface lies on it.

shoulder click to hear : shoulder

Area between the roadway and the ditch, providing the roadway lateral support; it is also a place for emergency stops.

bed click to hear : bed

Composed of the embankment and the earth foundation; the base rests on it.

earth foundation click to hear : earth foundation

Part of the ground that was not excavated during the road’s construction.

embankment click to hear : embankment

Layers of material used to build up or level the route the road is to take.

base click to hear : base

Series of layers above the embankment reducing stress exerted by the traffic and preventing the bed from deforming.

surface course click to hear : surface course

Roadway’s driving surface; it is smooth, impermeable and provides a good grip for vehicles.

roadway click to hear : roadway

Surface upon which vehicles drive.