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Cornering lamp and Driving lamps

- Aug 29, 2018 -

Cornering lamp

A cornering lamp on a 1983 Oldsmobile 98

On some models, cornering lamps provide white steady-intensity light for lateral illumination in the direction of an intended turn or lane change. They are generally actuated in conjunction with the turn signals, and they may be wired to also illuminate when the vehicle is shifted into reverse gear. Some modern vehicles activate the cornering lamp on one or the other side when the steering wheel input reaches a predetermined angle in that direction, regardless of whether a turn signal has been activated.

American technical standards contain provisions for front cornering lamps as well as rear cornering lamps. Cornering lamps have traditionally been prohibited under international UN Regulations, though provisions have recently been made to allow them as long as they are only operable when the vehicle is travelling at less than 40 kilometres per hour (about 25 mph).

Driving lamps

ISO symbol for long-range lamps

Auxiliary high beam lamps may be fitted to provide high intensity light to enable the driver to see at longer range than the vehicle's high beam headlamps may be fitted. Such lamps are most notably fitted on rallying cars, and are occasionally fitted to production vehicles derived from or imitating such cars. They are common in countries with large stretches of unlit roads, or in regions such as the Nordic countries where the period of daylight is short during winter.

"Driving lamp" is a term deriving from the early days of nighttime driving, when it was relatively rare to encounter an opposing vehicle. Only on those occasions when opposing drivers passed each other would the low (dipped or "passing") beam be used. The high beam was therefore known as the "driving beam", and this terminology is still found in international UN Regulations, which do not distinguish between a vehicle's primary (mandatory) and auxiliary (optional) upper/driving beam lamps. The "driving lamp" term has been supplanted in US regulations by the functionally descriptive term "auxiliary high-beam lamp".

Many countries regulate the installation and use of driving lamps. For example, in Russia each vehicle may have no more than three pairs of lights including the original-equipment items, and in Paraguay auxiliary driving lamps must be off and covered with opaque material when the vehicle is circulating in urban areas.

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