When following a vehicle, at what distance is a driver legally required to dim the high beams?

Answer: C — 60m

A driver is legally required to dim their high beams when they are within 60 meters of an oncoming vehicle or when following another vehicle closely. This regulation exists to prevent glare and ensure the safety and comfort of all road users. High beams provide increased visibility, but they can be blinding to other drivers, especially at night or in low-visibility conditions. By requiring drivers to dim their high beams at this distance, the law aims to promote safer driving practices and reduce the risk of accidents caused by impaired vision. Understanding this regulation helps drivers maintain appropriate lighting while on the road, allowing everyone to travel safely and efficiently. The other described distances do not correspond with the legal requirement, making it essential to remember that dimming high beams is mandated within 60 meters of other vehicles.