1General Provisions
1.0.1 TheseGuidelines are intended to implement the national technical and economic policies,unify the lighting design standards of highway tunnels , guidé the highway tunnel lighting design toconform to the principles of scientific, reasonable, economic, Safe and efficient utilization andprovide a lighting technical reference for tunnel operation.
1.0.3The lighting design of highway tunnel shall be incorporated into the overall design oftunnel.
Background :Tunnel lighting directly affects the operation safety and energy consumption oftunnels. The scale oflighting facilities is related to the tunnel length, horizontal curve , vertical curve and traffic volume.The adaptation luminance is related to the height of side and front slopes and vegetation at the
1.0.4 The design hourly volume ( DHV) in the lighting design of highway tunnel shall be thedesign peak hourly volume ( PHV)of hybrid vehicles.
Background :
In feasibility study report of engineering, passenger car unit ( pcu)is used for traffic volumeforecast, During lighting design, PCU traffic volume shall be converted into PHV of hybridvehicles.
Duringthe staged program oflighting design, light sources, lighting layout, power change andother factors are generally considered. An optimal program meeting the lighting requirements ofeach stage is selected according to the comprehensive economic analysis and comparison.
1.0.6 Lighting design of highway tunnels shall be based on normal traffic conditions andabnormal traffic conditions.
2Terms and Symbols
2.1 Terms
2.1.1 luminance
lluminance of a point refers to the ratio of the luminous flux of surface element to the area of thesurface element.
2.1.2 Luminance
Luminance refers tothe luminous intensity of the projected únit area.
2.1.5 Transition zoneIransition zone refers to the lighting section between threshold zone and interior zone, wheredrivers shall adapt to the change from high luminance at the threshold zone to low luminance in thetunnel.
2.1.6 Interior zone
Interior zone refers to the lighting section connectingwith threshold zone or transition zone along thedriving direction, where the required luminance for drivers is the lowest among all zones.
2.1.7 Exit zone
3General
3.0. 1 Design of lighting of highway tunnels shall meet the requirements on average road surfaceluminance , overall uniformity of the luminance of road surface ,longitudinal uniformity of theluminance of road surface , flicker and guidance.
Guiding devices favor the marking of tunnel alignment and profile and the improvement of drivingsafety. Self-luminous guiding devices or active guiding devices are normally adopted.
3.0.3Lighting design of highway tunnels shall be comprehensive based on the collection ofadequate data on civil works and traffic engineering design, and comply with the followingprinciples :
1General Provisions
2Terms and Symbols
2.1 Terms
2.2 Symbol
3General
4 Lighting of Threshold Zone
5 ighting of Transition Zone
6Lightimg of Interiof Zone
6.1Luminance of interior zone
6.2 Luminaireslayout of interior zone
7 Lighting of Exit Zone
8 Emergency Lighting and Approach Lighting
8.1 Emergency lighting
8.2 Approach lighting
9 Energy-conservation Standards and Measures
9 Energy-conservation Standards and Measures
9.1 General
9.2 Energy-conservation standard
9.3 Energy-conservation measures
10 Lighting Calculation
10.1 General
10.2 uminance calculation
11 Design Principles of Lighting Control
Appendix A Pre-digestion Luminance Factor of
Road Surface..Appendix B Examples of Lighting CalculationWording Explanation for the Guidelines
