As she let up, they found traction and the car shot out of the driveway.
It is served by the Pennsylvania, the Philadelphia & Reading and the Lancaster, Oxford & Southern railways, and by tramways of the Conestoga Traction Company, which had in 1909 a mileage of 152 m.
- The external forces acting on a bridge may be classified as follows: (t) The live or temporary load, for road bridges the weight of a dense crowd uniformly distributed, or the weight of a heavy wagon or traction engine; for railway bridges the weight of the heaviest train likely to come on the bridge.
The snow had melted on the mountain trail, and the dry gray rocks provided sufficient traction for Ed's hooves as they climbed higher into the hills.
Tramways with mechanical traction have developed rapidly.