Safe for all conditions | |
Safe for cars but not necessarily for buses | |
Safe for buses, cars can exceed this speed | |
Safe for both cars and buses |
Allow the driver to move freely and easily | |
Avoid damage | |
All of these are correct | |
Allow riders to exit using any door or window in an emergency |
A four-inch triangle | |
A four-inch circle | |
A four-inch diamond | |
A four-inch square |