toll 标签用于标记一条路，桥，轮渡，或其他的道路是收费的 - 你必须为使用它而掏钱。
Only portions of way from which there is no "escape" except for a U-turn should be marked as toll. A toll authority may maintain sections of road that are free to drive on, but charge a toll to pass a certain point. In that case, only the area around said point should be marked as toll.
- toll=yes - 标准的收费公路
- variants? for only certain vehicles tolled? pedestrians tolled?