operate when the vehicle is moving. This is a very promising contribution to
road safety but has yet to become mainstream.
10.3.4 LED lighting
Light emitting diode (LED) displays were rst produced commercially in 1968.
Almost from this time there has been speculation as to possible vehicle
applications. LEDs quickly found applications in the interior of the vehicle,
particularly in dashboard displays. However, until recently, legislation has
prevented the use of LEDs for exterior lighting. A simple change in the
legislative language from ‘incandescent lamp’ to ‘light source’, made it possible
to use lighting devices other than lament ...
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