Operation of buses is prohibited if:
Explication
The passenger area of a bus must be illuminated so riders can move and use exits safely. A tread depth of 2.5 mm is not below the stated bus minimum, so both conditions do not prohibit use.
The passenger area of a bus must be illuminated so riders can move and use exits safely. A tread depth of 2.5 mm is not below the stated bus minimum, so both conditions do not prohibit use.