Lightsbesidesshallmeetthegeneralrequirementsofthetrafficlight,alsoshouldmeetthefollowingrequirements:(1)thediameteroftheshinysurfacehasacertain,isdividedintotwo200mmand300mm,surfacebrightnessshouldasfaraspossibleeven.(2)thecolorisred,yellow,andgreenthreecolorlight,sometimeswithwhite.(3)withyourhatandothermeasurestoreducethesunlightslantedonthelampsandlanternsoutsmoothwhenthefalsephenomenon.  

Trafficlightsforasinglecolor,requirements:(1)lightintensity:thebackgroundbrightness104CD/m2,visibility100m,theredlightis200CD,theratioofthered,yellow,greencolorisstrongrecommendedto1:1.3:5.Inadditiontothecityofhigh-speedroadandhaveabrightbackgroundoutsidethecity,intheeveninglightintensitycanbelower,socanuse200CDand50CDtwokindsoflightintensity.(2)intensitydistribution:thedistributionoflightleftandrightsidesissymmetrical,inthelightintensityto50%ofthepeakintensityofthelight,shouldbeintheopticalaxisaroundeach5°~10°andbelow7°.  

Rulesoflight  

Article1withaviewtostrengtheningthecitytrafficmanagement,convenienttransportation,maintaintrafficsafety,tomeettheneedofnationaleconomicconstruction,theserulesareformulated.