| 摘要 |
A traction device for vehicles has a set of rectangular traction bars with an inverted V shaped cross section. Each bar has a contact surface on each side, opposite the vertex. The contact surfaces support the device on a supporting surface, while the vertices of the bars engage the treads of the vehicle's tires. Chains join the traction bars at spaced locations along the chains, allowing the traction device to be rolled up for transport or storage.
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