Search results
Results from the WOW.Com Content Network
Light beam from road tunnel fixture inclined towards approaching vehicle such that contrast is enhanced of obstacle on road. Counter-beam lighting (German: Gegenstrahlbeleuchtung) is a type of road lighting used mainly in road tunnels, providing best visibility of obstacles on the lane, and thus traffic safety, while reducing light-energy cost.
The shape of the LED street light depends on several factors, including LED configuration, the heat sink used with the LEDs and aesthetic design preference. Heat sinks for LED street lights are similar in design to heat sinks used to cool other electronics such as computers and smart street light energy saving systems. Heat sinks tend to have ...
New street lighting technologies, such as LED or induction lights, emit a white light that provides high levels of scotopic lumens. It is a commonly accepted practice to justify and implement a lower luminance level for roadway lighting based on increased scotopic lumens provided by white light.
The UK Department for Transport (DfT) and the Department for Communities and Local Government (DCLG), with support from the Commission for Architecture and the Built Environment (CABE), commissioned WSP Group, Transport Research Laboratory (TRL), Llewelyn Davies Yeang and Phil Jones Associates to develop Manual for Streets to give guidance to a range of practitioners on effective street design.
Compared with other types of warning devices, the effectiveness of the embedded pavement flashing light system seems to be high. [4] When approaching a crosswalk with an embedded pavement flashing light system, drivers are more apt to slow down and yield to pedestrians than when drivers approach a crosswalk with another type of lighted warning device. [5]
It is the responsibility of a manufacturer of vehicles and/or vehicle lamps to certify that each motor vehicle and/or lamp is in full compliance with the minimum performance requirements of FMVSS 108. This is a self-certification process as opposed to the type approval process which is used in other lighting regulations such as UNECE Regulation 48.
Smart highways and smart roads [1] are highways and roads that incorporate electronic technologies. They are used to improve the operation of connected and autonomous vehicles (CAVs [2]), for traffic lights and street lighting, and for monitoring the condition of the road, as well as traffic levels and the speed of vehicles.
But it was not until April 7, 2006, that Europe experienced the first large scale implementation of a control network in a street lighting application. The implementation took place in Oslo (Norway) and it was expected to reduce energy usage by 50 percent, improve roadway safety, and minimize maintenance costs. [3]