| Safe for buses, cars can exceed this speed | |
| Safe for cars but not necessarily for buses | |
| Safe for all conditions | |
| Safe for both cars and buses |
| Avoid damage | |
| Allow the driver to move freely and easily | |
| Allow riders to exit using any door or window in an emergency | |
| All of these are correct |
| All of these | |
| All riders have access to all exits | |
| The cargo does not impact the free movement of the driver | |
| Passengers are protected from loose cargo |