LED Luminaires for Roadway Sign Illumination.

摘要

The researcher collected data to assess the performance of different LED luminaires for use with overhead guide signs by ITD. The performance testing included illuminance and luminance measurements when the units were new and then after being weathered for one year outside. The impact of temperature was evaluated, and a prototype mobile luminance system was developed to provide ITD with a field tool to assess sign performance. Each luminaire was also modeled to provide ITD with information on the potential differences between modeled photometric values versus real world values. When considering current guidance on guide sign lighting, previous research, and the data collected on this project, it is believed that each of the luminaires tested could be used by ITD based on photometric data. It is recommended that the mobile luminance system developed during this project be used to supplement modeling data for evaluating additional luminaires that are being considered for the QPL. The mobile luminance system should also be used for assessing sign maintenance needs.