Modern headlights have become noticeably brighter and whiter, leaving many drivers dazzled by oncoming traffic even when high beams aren't in use. The article traces this shift back through the history of automotive lighting, explaining that today's glare problem stems not simply from careless drivers but from a long-running evolution in lighting technology and regulation that hasn't fully kept pace with modern vehicle design.

The piece charts the progression from oil lanterns on horse-drawn carriages, through flammable acetylene lamps in the early 1900s, to the technical standards that emerged as cars grew faster and night driving became routine. Early regulation in the UK, US and Europe simply required vehicles to carry lamps so they could be seen, with no consideration of beam pattern or glare control; these vague rules gradually hardened into more detailed lighting standards as complaints from pedestrians, horse riders and other road users mounted in the early 1900s, laying the groundwork for the more sophisticated, and sometimes blinding, lighting systems used today.