TRILUX Luminaires - Proljus AB

Photometrics
Pedestrian crossings
Pedestrian crossings (FGÜ) should be illuminated
so that pedestrians can be easily
recog nised at the pedestrian crossing and
the waiting area on the edge of the street
from both directions at night and when it is
raining and so that the recognisability of the
markings of the pedestrian crossing is also
ensured at night. EN 13201-2 generally
describes two types of lighting at pedestrian
crossings:
• Negative contrast: The pedestrian is only
illuminated slightly and thus appears as a
dark silhouette against an illuminated
background.
• Positive contrast: The pedestrian is illuminated
and appears clearly against the
mostly darker background that is only
slightly illuminated by the general street
lighting.
The additional lighting for the pedestrian
crossing (FGÜ) should be switched independently
of the street lighting, since the more
stringent lighting requirements make a higher
daylight component and thus an earlier
actuation time necessary. In case of separate
lighting grids it is supplied with electricity
usually from the public power grid and
switched, e.g., using ripple control systems.
Pedestrian crossings (also called crosswalks
or z ebra crossings) are one of the many possibilities
for ensuring the safety of pedestrians
who are crossing a street. In recent
years, more and more pedestrian crossings
are being installed primarily for cost reasons.
Their costs are cited at only 20 % to
30 % compared to pedestrian signal systems.
The lighting of pedestrian crossings is covered
in the appendix to EN 13201-2. Here
reference is also made to the national standards
that apply in several European countries
336
4.5 m
6.0 m
with in-depth photometric requirements and
planning recommendations. Specific requirements
are not indicated in this standard. It
does, however, recommend positioning luminaires
with asymmetrical light distribution
in front of the pedestrian crossing so that the
pedestrians are illuminated from the perspective
of the motorists and that there is a
positive contrast against the darker street
background. The zones, where pedestrians
wait prior to crossing the street, are to be
illuminated as well.
4.5 m
6.0 m
7.0 m
1.17 Example of a typical installation geometry for the standards-conforming illumination
of a pedestrian crossing according to DIN 67523: 2 luminaires LUMEGA 700 with special
optics, each with 1 x HST 100 W.
1.18 The planning of a lighting system for a pedestrian crossing is one of the possible options available in the TX-WIN Area software.
Here it is possible to adapt the necessary parameters of the system configuration to the requirements of the horizontal and vertical
illuminance. Download at www.trilux.co.uk or www.trilux.com.