EVU XXIV 2015 – 27 Visibility of obstacles at night – selected elements

Visibility of obstacles at night
– selected elements
Jan Unarski
Wojciech Wach
Piotr Ciępka

Abstract

Over the past two years many expert opinions have been produced in which the LMK
system of luminance measurement, presented at the 22 EVU Congress in Florence in
2013, has been applied. The system included the measurements of the luminance of
obstacles and background, which were next used to determine an approximate obstacle
visibility distance. The system has proved successful and despite troublesome
calculations, yielded good results. In practice it is useful mainly in complex luminance
situations (such as a non-typical obstacle or the presence of several objects producing
glare) for which there are no ready made sighting rules, and, moreover, the “engineering
intuition” cannot be trusted. In view of the above, this time the authors have focused on the
description of some cases solved by means of LMK system. These study cases have led
to some interesting conclusions.

La lettura di questo articolo è riservata ai soli Soci EVU Italia

Autore	Jan Unarski Wojciech Wach Piotr Ciępka
Pubblicato il
Tipologia