This CEN Technical Report gives guidance on the design of lighting of road tunnels and underpasses for motorized and mixed traffic. This guidance concerns arrangements, levels and other parameters including daylight, which are related only to traffic safety. Aspects concerning visual comfort, should be chosen in agreement with national practice. The guidance in this report may be applied to any tunnel or underpass where the decision to provide lighting has been taken by any authority working within national legislation or other constraints. The report is based on photometric considerations, and all values of luminance and illuminance are maintained values.
DS/CEN/CR 14380:2003 history
2013DS/ISO/IEC 11694-2:2013 Identification cards - Optical memory cards - Part 2: Dimensions and location of the accessible optical area