Final Report Lot 9: Public street lighting - Amper

This results in a total width to be lit in one direction of 10m.
• For category M:
- 2 x 3,50m for the fast traffic lanes
- 2 x 1,50m for the cyclists / pedestrians
what results in an overall width of 10m to be lit.
• For category S:
The width of the traffic lanes is rather constant.
The public surrounding space next to the traffic lanes can differ strongly in residential
areas: separate parking lanes or not, separate footpaths or not, green strips between traffic
lanes and footpaths or not etc.
Many commercial areas only allow traffic during the night and the early morning. As a
consequence they do not have separate traffic lanes and footpaths.
In our model, we assume a space to be lit in category S:
- 2 x 3,00m for the traffic lanes
- 2 x 1,00m for the footpaths
and this results in an overall width of 8m.
For this study, following simplified assumptions are made:
Table 30: Road width assumptions made in this study
Cat. F Cat. M Cat. S
Average number of 2 x 2
lanes
2 x 1 2 x 1
Average overall width 20
in m
10 8
3.3.7 Lighting point spacing and spacing to height ratio (SHR)
The spacing between lighting poles or lighting points and the height of them are largely
different.
In order to have an overview of EU25 this question was included in the Expert inquiry (see
chapter 2). dimension.
Summary of the Expert inquiry:
For roads in category F there is a very large difference in spacing between countries going from
40 to 90m but the spacing/height ratio is approximately the same: 4 (e.g. 90/20, 60/15, 48/12,
40/13).
For the roads in category M the spacing/height ratio varies between 4,5 and 3 (e.g. 45/10,
50/12,5, 35/11).
For the roads in category S the divergence of the spacing/height ratio is between 5 and 4 (e.g.
40/8, 36/8, 25/5, 30/7, 20/4).
It is logical that the SHR varies between the categories. In cat. F and M, the European standard
imposes severe limitations on the glare caused by the luminaires. This means that the
luminaires can not have very extensive optical systems and so the spacing is limited to about 4
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