Windowcollisions.info Vögel & Glas

Good solutions (Noise barriers & transparent walls)

none transparent noise barrier
Before you use glass at sites where it could pose a danger for birds, please consider:
  • Does it have to be transparent or highly reflecting glass?
  • Non-transparent noise barriers (e.g. made from wood) make good ecological sense and may reduce the noise more effectively.
  • If transparent material is unavoidable please mark the walls with stripes to make them perceptible for birds. We recommend you the European standard defined by COST 341.


Examples


noise barrier with stripes Noise barrier on a highway bridge, equipped with standard stripes (2cm/10cm) applied already during production. The stripes should have a certain degree of contrast under different light conditions.

effectiveness
4
practicability
5
longevity
5
costs
3
visiblity for humans
3

ribbon Similiar prevention measure as above, using a ribbon of the colour "crystal". It is not so easy to stick them on in a very even pattern and depending on the prodcut the longevity of such stripes is rather reduced.

effectiveness
4
practicability
3
longevity
4
costs
3
visiblity for humans
3

1cm stripes These stripes have a width of only 1cm; the distance between them is 5cm. The effectiveness is similiar with the measures shown above. However, the aspect is a bit lighter.

effectiveness
4
practicability
3
longevity
4
costs
3
visiblity for humans
3

horizonal stripes 1horizontal stripes 2horizontal stripes 3
Horizontal stripes on a noise barrier in a residental area in Vienna. The high desity of stripes, covering up to 50% of the glass panes, provide of course an optimal protection. However, this glass type still may reflect - depending on the angle - parts of the surroundings (as can be seen on the second photograph).

effectiveness
4.5
practicability
5
longevity
5
costs
3
visiblity for humans
2
Problems: reflection

stadium wind shelter frontstadium wind shelter back
Wind shelter in a football stadium. After a series of collisions these panes were equipped with dark stripes which had a good success. The mounting itself was rather difficult.

effectiveness
4
practicability
2
longevity
4
costs
4
visiblity for humans
2
Problems: mounting afterwards


Alternatives


pattern design 1pattern design 2
Noise barrier in an Austrian town, with a pattern designed by Hil de Gard. Original idea providing an effective protection. However, it's not the cheapest solution...

effectiveness
4
practicability
2
longevity
5
costs
4
visiblity for humans
2

squares 5x5
Noise barrier with squares (5 x 5 cm, 10 cm apart) in "crystal". In a field test this pattern provided good results.

effectiveness
4
practicability
5
longevity
5
costs
3
visiblity for humans
3


Ineffective solutions


colored wallcomic on wallineffectiv solution 3


Worst examples

vegatation behind transparent wall Important: Vegetation attracts birds and thus multiplies the collision rates along transparent barriers! Either you want an undisturbed view, using a transparent wall. Then you should cut down all bushes and trees. Or you want the wall camouflaged with vegetation - but then the wall doesn't need to be transparent!



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