CIE and Roadlighting

Steve Jenkins

Division 4 Representative

CIE Committees for Roadlighting

• TC 4-15 Road Lighting Calculations, Test Data and Measurements

• TC 4-24 Calculation and Measurement of Tunnel Lighting Quality Criteria

• TC4-26 Systems for Measurement of Photometric Quantities of Road Lighting Installations

CIE Committees for Roadlighting

• TC4-33 Discomfort Glare in Road Lighting

• TC4-36 Visibility Design for Road Lighting

• TC 4-44 Management and Maintenance of Road Lighting

• TC 4-48 White Light in Road Lighting

CIE 115:2008

• Lighting of Roads for Motor and Pedestrian Traffic

• Since CIE 115:1995, power consumption and environmental aspects have become important. There have been improvements in performance of lamps, luminaires and electronic control gear.

• Now possible to introduce adaptive lighting for roads with motorised traffic (M), conflict areas ( C) and pedestrian traffic (P)

CIE 115:2008

• A structured model is developed for the selection of the appropriate lighting categories based on the luminance or illuminance concept.

• Then applying, eg, time dependent variables like traffic volume or weather conditions, the model offers the possibility of using an adaptive system

Criteria for Road Lighting

• Roads for motor traffic – Luminance

• Conflict areas – Luminance/illuminance concept (Eh)

• Pedestrian areas – illuminance concept (Eh and Ev and Esc)

Criteria for Road Lighting

• Conflict Areas:

• When vehicle streams intersect each other or with pedestrians, cyclists or others.

• Change in road geometry.

• Parking areas, toll stations

Lighting Classes

• Normal Lighting:• That lighting category which is appropriate if the

same level is to be used throughout the hours of darkness.

• Adaptive Lighting:• Temporal changes in parameters under

consideration when selecting Normal class could allow relaxation of Normal levels.

Lighting Areas• Motorised traffic, M, (for drivers of motorised

vehicles – luminance)

• Conflict areas, C, (where traffic streams intersect, or run into areas with peds. cyclists, or there is change in geometry or parking areas – luminance or illuminance)

• Pedestrian and low speed areas, P, ( for needs of pedestrians – illuminance, H and V)

Lighting Categories (Luminance)Category Lavge Uo Ul TI% SR

M1 2.0 0.40 0.70 10 0.5

M2 1.5 0.40 0.70 10 0.5

M3 1.0 0.40 0.60 15 0.5

M4 0.75 0.40 0.60 15 0.5

M5 0.50 0.35 0.40 15 0.5

M6 0.30 (0.35)

0.35 0.40 20 0.5

AS/NZS 1158.1.1:2005

Conflict Areas (Illuminance)Lighting Category Eavge Uo (E) TI% High

speed

TI% low speed

C0 50 0.40 10 15

C1 30 0.40 10 15

C2 20 0.40 05 15

C3 15 0.40 15 20

C4 10 0.40 15 20

C5 7.5 0.40 15 20

Conflict Areas, (Luminance)M1 M2 M3 M4 M5 M6

2.0 1.5 1.0 0.75 0.50 0.30

C0 C1 C2 C3 C4 C5

Qo=0.05cd/m2/lx

R4 (Mastic asphalt)

50 30 20 15 10 7.5

C0 C1 C2 C3 C4 C5

Qo=0.07cd/m2/lx

R3 (asphaltic concrete)

50 30 20 15 10 7.5

C0 C1 C2 C3 C4 C5

Qo=0.09cd/m2/lx

R1 (concrete)

50 30 20 15 10 7.5

Pedestrian and Low speed Areas, (Illuminance)

Cat. Avge E

Min. Eh

Min Ev

Min Esc

P1 15 3.0 5.0 3.0

P2 10 2.0 3.0 2.0

P3 7.5 1.5 2.5 1.5

P4 5.0 1.0 1.5 1.0

P5 3.0 0.6 1.0 0.6

P6 2.0 0.4 0.6 0.4

Pedestrian and Low speed Areas, (Glare)

Lighting Category TI%

P1 20

P2 25

P3 25

P4 30

P5 30

P6 35

Pedestrian and Low speed Areas, (Glare)

Max. intensity in cd/klmGlare category 70o and above 80o and above 90o and above

G1 - 200 50

G2 - 150 30

G3 - 100 20

G4 500 100 10

G5 350 100 10

G6 350 100 <1

Model for M CategoriesParameter Options/WV WV

Speed VH/1, H/0.5, Mod/0 1Traf. Vol. VH/1, H/0.5, Mod/0, Low/-0.5, VL/-1 1Traf. Comp. Mixed with H non-M/2, Mix/1, Mot only/0 0Separation No/1, Yes/0 0Int. density H/1, Mod/0 0Parked Veh. Present/0.5, Not pres/0 0Ambient L H/1, Mod/0, Low/-1 1Vis Guid Poor/0.5, Mod to Good/0 0

Sum (SWV) 3

Model for M Categories

• Lighting category is

• M = 6 – SWV

• M = 6-3 =3

• If Category number is not a whole number, use the next lower whole number

Model for C CategoriesParameter Options/WV WV

Speed VH/1, H/0.5, Mod/0 0.5Traf. Vol. VH/1, H/0.5, Mod/0, Low/-0.5, VL/-1 1Traf, Comp. Mixed with H non-M/2, Mix/1, Mot only/0 2Separation No/1, Yes/0 1Ambient L H/1, Mod/0, Low/-1 0Vis Guid Poor/0.5, Mod to Good/0 0

Sum (SWV) 4.5

Model for C Categories

• Conflict Area category is

• C = 6 – SWV

• C = 6 - 4.5 =1.5

• If Category is not a whole number, use the next lower whole number, then

• C = 1

Model for P CategoriesParameter Options WV

Speed Low/1, V. Low/0 1Traff .Vol. VH/1, H/0.5, Mod/0,

Low/-0.5, v. Low/ -10

Traff. Comp. P+C+M/2, P+M/1, P+C/1,

P/0, C/02

Parked vehicles Pres/0.5, Not Pres./0 0.5Ambient Lum. H/1, Mod/0, Low/-1 0Facial recognition Necessary Additional

requirements

SUM 3.5

Model for P Categories

• Pedestrian Area Category is:

• P = 6 – WV

• P = 6 - 3.5 = 2.5

• If Category is not a whole number, use the next lower whole number, then

• P = 2

Implementing Adaptive LightingParameter On –

21:0021:00 – 24:00

00:00 – 6:00

6:00 - Off

Speed 1 1 1 1Traff. Vol. 1 0 -1 1Traff. Comp. 0 0 0 0Separation 0 0 0 0Int. density 0 0 0 0Parked vehicles 0 0 0 0Ambient lum. 1 1 0 1Vis. Guidance 0 0 0 0SUM 3 2 0 3M = 6-SWV M3 M4 M6 M3

Implementing Adaptive Lighting

Category Lavge Uo Ul TI% SR

M1 2.0 0.40 0.70 10 0.5

M2 1.5 0.40 0.70 10 0.5

M3 1.0 0.40 0.60 15 0.5

M4 0.75 0.40 0.60 15 0.5

M5 0.50 0.35 0.40 15 0.5

M6 0.30 0.35 0.40 20 0.5

Implementing Adaptive LightingParameter On –

21:0021:00 – 24:00

00:00 – 6:00

6:00 - Off

Speed 2 2 2 2Traff. Vol. 1 0 0 1Traff. composition 2 1 1 2Separation of carriageways

1 1 1 1

Ambient Lum. 0 0 -1 -1Vis. guidance 0 0 0 0

SUM 6 4 3 5C = 6-SWV C0 C2 C3 C1

Implementing Adaptive Lighting

Lighting Category Eavge Uo (E) TI% High

speed

TI% low speed

C0 50 0.40 10 15

C1 30 0.40 10 15

C2 20 0.40 05 15

C3 15 0.40 15 20

C4 10 0.40 15 20

C5 7.5 0.40 15 20

Pedestrian and Low speed Areas, (Illuminance)

Cat. Avge E

Min. Eh

Min Ev

Min Esc

P1 15 3.0 5.0 3.0

P2 10 2.0 3.0 2.0

P3 7.5 1.5 2.5 1.5

P4 5.0 1.0 1.5 1.0

P5 3.0 0.6 1.0 0.6

P6 2.0 0.4 0.6 0.4

Summary• Proposes model for Adaptive Lighting• Weight important parameters for each time

period• Sum of the Weighting Values is related to

the Lighting category• Only the quantitative variables change, the

qualitative variables stay at the appropriate Normal lighting levels