At VISION congress, one particularly thought-provoking paper came from the U.S., where despite high-volume glare complaints to the government, levelling systems are not required and aim is not checked periodically.
A study from UMTRI, found the need for such systems has grown more critical in recent years, especially so for HID lamps.
One example with HID, shows a glare increase of 2,400% (from 700cd to 17,700cd) from a nominal aim to 1.4°Up.
A study from UMTRI, found the need for such systems has grown more critical in recent years, especially so for HID lamps.
One example with HID, shows a glare increase of 2,400% (from 700cd to 17,700cd) from a nominal aim to 1.4°Up.
For the speaker Michael Sivak, the importance of headlamp cleaning has stayed approximately the same,