All vehicles manufactured since 1/1/1969 were equipped with at least how many red stop lamps?

Vehicles manufactured since January 1, 1969, were required to be equipped with at least two red stop lamps to ensure adequate visibility and safety. The standardization of stop lamps serves to communicate a driver's intention to other road users, enhancing overall traffic safety. Having at least two red stop lamps improves the likelihood that following drivers will notice when a vehicle is braking, which helps to prevent rear-end collisions and enhances reaction time in various driving conditions.

This requirement reflects advancements in automotive safety standards over time, aligning with regulations aimed at smarter vehicle design. The presence of multiple stop lamps allows for better recognition from different angles and distances, making it a crucial aspect of vehicle safety.