Which of the control lights visible in the illustration indicates that the safety seat belts are not fastened?

The illustration shows three warning lights: A - a red exclamation mark in a circle between brackets, B - a red figure of a person in a seat with a belt running across them, C - orange letters ABS in a circle. Light B tells you that the seat belts are not fastened - answer B. Light A warns of a fault in the braking system or that the parking brake is applied, and C - of a failure of the ABS system.

The symbol is easy to read: a person in a seat and a belt across their chest. The warning light goes off when the driver fastens the belt; it is often accompanied by a warning sound. The Road Traffic Act requires the driver of a motor vehicle and a person carried in such a vehicle, if it is equipped with seat belts, to use the belts while driving, and the Regulation on the technical conditions of vehicles requires seat belts on seats equipped with anchorage points, which in today's passenger cars means all seats. An unfastened seat belt means a fine and penalty points, and in a collision at 50 km/h the body hits the steering wheel with a force many times greater than its weight; an airbag does not fully protect you without a fastened seat belt, and it may even injure you. You fasten your seat belt before you move off.

Legal basis: Art. 39 para. 1 of the Road Traffic Act (Prawo o ruchu drogowym); § 11 para. 1 point 8 of the Regulation on the technical conditions of vehicles and the scope of their necessary equipment