Here they just wait till the light bulbs burn out, and replace them with
the LED unit (compatible with the bulb socket and assembly.)  I believe
the lens was integrated with the bulb, so they don't have to replace
anything but the bulb.  Can't wait until they have super-high brightness
(and cheap) amber and green LEDs...  (They only have red led lights
right now...)

-Adam

V sml wrote:
>
> If that is the case, then super bright LED should be considered.  This
> will shake the requirement.  The traffic light in my
> country(Singapore) would be all converted to LED matrix in the next
> year.  Don't ask me what are they going to do with the good old
> traffic lamps would be replaced.  I don't know.
>