What is the maximum allowable brightness of headlamps in candlepower?

The maximum allowable brightness of headlamps for vehicles is established for safety and effective visibility while driving at night or in low-light conditions. In Maine, as in many other jurisdictions, the standard maximum brightness is 150,000 candlepower. This level ensures that the lights provide adequate illumination without overwhelming oncoming drivers or causing glare, which could lead to unsafe driving conditions.

Understanding the significance of headlamp brightness is crucial, as excessively bright headlamps can be a source of distraction and danger on the road. The regulation balancing visibility for the driver and safety for all road users is why this maximum limit is set at this specific level. Other options listed, such as 75,000, 100,000, or 200,000 candlepower, do not align with these safety regulations, either being too low to provide adequate illumination or too high, which would create risks due to glare.