A driver of a commercial vehicle that transports more then eight passengers and who is obliged to wear glasses or contact lenses must:

1. A Hold an extra pair of the optical instrument, besides the pair he’s wearing.
2. B Hold in the vehicle a spare pair of glasses or lenses apart from the pair he’s wearing.
3. C Verify before driving the regularity and cleanliness of the optical instrument.
4. D Perform a visual acuity test once every six months, according to requirements.