Searched for: author:"Alferdinck, J.W.A.M."
(1 - 20 of 53)

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Alferdinck, J.W.A.M. (author), van Buuren, R.A. (author), de Goede, M. (author)
Purpose : Rijkswaterstaat (RWS) Dept. Verkeerscentrum Nederland (VCNL) is confronted with an increasing yearly number of collisions with road inspector cars (WIS-cars) that secure traffic incidents on highways. Therefore, RWS has asked TNO to investigate the causes of these collisions, and to advise on possible solutions to reduce the number of...
report 2016
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Kroon, E.C.M. (author), Martens, M.H. (author), Brookhuis, K. (author), Hagenzieker, M.P. (author), Alferdinck, J.W.A.M. (author), Harms, I.M. (author)
bookPart 2016
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Alferdinck, J.W.A.M. (author), de Goede, M. (author), van Buuren, R.A. (author)
Purpose : Road users may be hindered by sun reflections in man built objects along the road. To assess these glare situations currently an TNO developed assessment method is used which is based on discomfort glare (TNOdiscom). This report describes the development of an alternative assessment method based on disability glare, which also takes...
report 2016
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van Buuren, R.A. (author), Alferdinck, J.W.A.M. (author)
Rijkswaterstaat (RWS) wants to harmonize its internal specifications for background shields and white edges used on information carriers along the road. RWS has asked TNO to build up, from its expertise, an analysis of existing literature that will act as a motivation for using background shields and white edges.
report 2015
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van Buuren, R.A. (author), Alferdinck, J.W.A.M. (author)
Rijkswaterstaat (RWS) wants to harmonize its internal specifications for background shields and white edges used on information carriers along the road. RWS has asked TNO to build up, from its expertise, an analysis of existing literature that will act as a motivation for using background shields and white edges.
report 2015
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Alferdinck, J.W.A.M. (author), Schreuder, E.J.A. (author), Toet, A. (author)
Purpose : In the framework of the Snellius project we investigate the possibility to improve the lighting of indoor car parks by designing and testing the dynamic lighting concept of the activity spot. A person in de car park is detected by sensors and the lighting nearby the person is set to a higher level than in the rest of the car park. The...
report 2014
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de Goede, M. (author), Alferdinck, J.W.A.M. (author)
In 2017 zullen de communicatiesystemen in de Westerscheldetunnel (WST), die in 2003 is geopend, worden vervangen. In aanloop hiernaar wordt ook bekeken of andere technische installaties, zoals de verlichting, mogelijk vervangen en/of aangepast dienen te worden. TNO heeft, aan de hand van lichtmetingen en een wegbeeldanalyse in de Oostelijke en...
report 2014
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Alferdinck, J.W.A.M. (author), Kroon, E.C.M. (author), Hogervorst, M.A. (author), van der Horst, A.R.A. (author)
report 2013
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Alferdinck, J.W.A.M. (author), Hogervorst, M.A. (author)
Light sources that are optimized for mesopic vision contain a relatively high amount of bluish light (high S/P-ratio) and are therefore effective for peripheral visual tasks at mesopic light levels. Since the spectra of these light sources differ strongly from the common public lighting there were doubts on the performance of these light sources...
conference paper 2013
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Alferdinck, J.W.A.M. (author), Hogervorst, M.A. (author)
Purpose : According to international legislation pilothouse windows of inland vessels should have a minimum light transmission of 75%. The shipping sector is wondering whether this requirement can be reduced since a large portion of the fleet is equipped with green tinted windows panes with a lower light transmission. In this study, we answer...
report 2013
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Toet, A. (author), Alferdinck, J.W.A.M. (author)
In this study we investigated the effectiveness of high power illuminators that are intended to be used as warning devices or non-lethal weapons to deny car drivers their view on the outside world through windscreens. The test is based on a measurement of the amount of veiling glare resulting when a high intensity light source hits a windscreen....
conference paper 2013
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Lucassen, M.P. (author), Alferdinck, J.W.A.M. (author), van Megen, R. (author)
bookPart 2012
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Lucassen, M.P. (author), Alferdinck, J.W.A.M. (author), van Megen, R. (author), TNO Defensie en Veiligheid (author)
In The Netherlands, veal carcasses are classified on color, conformation and fatness. In the past 20 years, major efforts have been put into the development of a reliable color classification system. Initially, the color of the musculus rectus abdominis was visually matched to a 10-point scale. Later on, the visual classification was replaced by...
conference paper 2010
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Alferdinck, J.W.A.M. (author), Hogervorst, M.A. (author), van Eijk, A.M.J. (author), Kusmierczyk, J.T. (author), TNO Defensie en Veiligheid (author)
Purpose : The Ministry of Infrastructure and Environment (I & M), has followed the advice of the - by her in 2007 established - Lighting Taskforce, and started an investigation to determine to what extent energy can be saved in public lighting by using light sources that are optimized for mesopic vision. The trigger for this investigation is a...
report 2010
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Toet, A. (author), van der Leden, N. (author), Alferdinck, J.W.A.M. (author), TNO Defensie en Veiligheid (author)
High intensity light sources like searchlights (in the Netherlands sometimes referred to as skybeamers) are increasingly deployed in the open air at public events, funfairs, or to attract attention to commercial venues. Other high intensity light sources like (handheld) spotlights are frequently used near construction sites or sport events. As a...
report 2009
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Struijs, J. (author), den Hollander, H.A. (author), Alferdinck, J.W.A.M. (author), de Kruijter, N.J. (author), van Hoek, J.P. (author), TNO Defensie en Veiligheid (author)
Leds or conventional public lighting? A comparative exercise on energy efficiency and environmental impacts Public lighting with energy efficient leds (light emitting diodes) may help to reduce energy consumption in the Netherlands. The limitations of this new technique need however further research. In this report luminaries based on led...
report 2009
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Alferdinck, J.W.A.M. (author), van der Leden, N. (author), TNO Defensie en Veiligheid (author)
In a psychophysical experiment the adequate luminous intensities for traffic lights were measured as function of time of day, colour, size and three perception criteria minimum, optimum, and maximum. By day the traffic lights were adjusted at average luminous intensities of 124 cd, 369 cd, and 616 cd for the perception criteria minimum, optimum,...
conference paper 2009
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Alferdinck, J.W.A.M. (author), Martens, M.H. (author), TNO Defensie en Veiligheid (author)
Purpose : In order to avoid noise annoyance of car traffic in residential areas, a lot of sound barriers were build along the motorways in the Netherlands in the last few years. These barriers can cause glaring sun reflections. Road users often complain about these reflections. TNO has performed a study on the glare due to sun light reflection...
report 2009
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Alferdinck, J.W.A.M. (author), TNO Defensie en Veiligheid (author)
Een van de visuele taken bij het rijden bij nacht is het tijdig reageren op potentieel gevaarlijke objecten in het verkeersbeeld. Vaak worden deze objecten waargenomen bij schemerige (mesopische) lichtniveaus in de periferie van het visuele veld. Omdat er nog geen geschikte meetmethoden zijn voor deze mesopische lichtniveaus (luminanties tussen...
conference paper 2008
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van der Leden, N. (author), Alferdinck, J.W.A.M. (author), TNO Defensie en Veiligheid (author)
conference paper 2008
Searched for: author:"Alferdinck, J.W.A.M."
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