In 1943 they introduced the first road widener. In 1954 they introduced the first wheel-driven, rather than track-driven, paver. The paver tires rode on a prepared base -- or often on an older pavement -- and the paver pushed the asphalt truck.
In 1943, they began developing the initial road widening device. In 1954, they introduced the first wheel-powered, instead of track-driven, paver. The paver tires rolled over a prepared base or an older surface, and the paver pushed the asphalt truck.