Vandal proof filter solution with maximum readability for traffic lights

TTS is one of Europe’s most innovative and productive companies within the business of traffics, parking and city-owned equipment. PSC developed and supplied the cover glass for the “Green Light” series of traffic lights.

TTS changes the traffic lights from the traditional glow lamp into a LED technique. Furthermore, it is a flat panel design without the “sunshades” normally seen on traffic control lights. The requirements are therefore a cover glass solution which provides maximum readability in full daylight.

Furthermore, the solution must be suitable for outdoor use and impact resistant to prevent damages due to vandalism.

Solution

The solution chosen is based on a polycarbonate filter as this material is very well suited for the application and has a very high impact resistance. A special grey-shaded filter was chosen to provide good contrast enhancement.

Finally, a Fine Mat surface treatment is applied to reduce reflections from incoming light, ensuring all time readability.

Customer benefits

The traffic lights are difficult to damage due to the polycarbonate display filter and the signal is easier to see because of the contrast enhancement. This improves the traffic security.

In addition, the mat finish treatment improves the readability and reduces the need to clean the surface, which equals less maintenance costs.

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PSC A/S, Industrivej 13, DK-9700 Brønderslev, Denmark.
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