A new motorway is being built in a forest clearing. Various vibratory road rollers and soil compactors are being used, pulled by tractors or steered by hand over the ground. Elsewhere a hand-held rammer is in operation on a pavement. Railway workers use a Ballast vibrator to pack the ballast tightly under railway sleepers - a mobile generator provides electricity. A concrete plant supplies the material for one of the road projects. A Beam Testing Apparatus tests the strength of the concrete before a concrete spreader lays it. Various machines and workmen level off the concrete, ensuring the proper finish for the roads. The film ends with images taken from within a car as it travels along the completed roads.