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(A) Type of Road
(B) Street Light Pole
(C) Lighting Fixture
(D) Lighting Factors
(E) Lighting Uniformity
(F) Lighting Pollution
(G) Selection of Luminas
|
Table 4 : Road Classes as per SP 72 (Part 8), IS 1944 (Part 1) and IS 1970 |
|
| Class A1 | Important routes with rapid and dense traffic where safety, traffic speed, and driving comfort are the main considerations |
| Class A2 | Main Roads with considerable volume of mixed traffic, such as main city streets, arterial roads and thoroughfares. |
| Class B1 | Secondary roads with considerable traffic such as main local traffic routes, shopping streets |
| Class B2 | Secondary roads, with light traffic |
| Class C | Lighting for residential and unclassified roads not included in previous groups |
| Class D | Lighting for bridges and flyovers |
| Class E | Lighting for town and city centers |
| Class F | Lighting for roads with special requirement such as roads near air fields, railways and docks |
|
TYPE OF ROAD |
|||
| TYPE OF ROAD | DENSITY OF TRAFFIC | TYPE | EXAMPLE |
| A | Heavy and high speed motorized traffic | Road with fixed separators, No crossings for very long distance | National highways or state highways or called interstate highways, express ways or motor ways |
| B | Slightly lower density and lower speed traffic termed | Road which is made for vehicular traffic with adjoining streets for slow traffic and pedestrians as we find in metros | Trunk road or major road in a city |
| C | Heavy and moderate speed traffic | Important urban roads or rural roads. they do not interfere with the local traffic within the town | Ring roads |
| D | Slow traffic, pedestrians | Linking to shopping areas and invariably the pedestrians, approach road | Shopping street, trunk road |
| E | Limited speed. Slow or mixed traffic predominantly pedestrians, | Local streets, collectors road | |
(b) Both Side Staggered Pole Layout:
(c) Both Side opposite Pole Layout:
(d) Twin-central Pole Layout:
(i) Setback
|
Set Back (BS 5489) |
|
| Design Speed | Pole Set Back |
| 50 Km/Hr | 0.8 Meter |
| 80 Km/Hr | 1 Meter |
| 100 Km/Hr | 1.5 Meter |
| 120 Km/Hr | 1.5 Meter |
(ii) Overhang
(iii) Outreach
(iv) Pole Boom(Arm) Length:
(v) Arm Type:
(vi) Arm Lengths:
(vii) Boom Tilt Angle (Boom Angle)
|
Tilt Angle |
||
| Pole Height | Arm Length | Arm Tile Angle |
| 6 Meter | 0.5 Meter | 5°,10°,15° |
| 8 Meter | 1 Meter | 5°,10°,15° |
| 10 Meter | 1.5 Meter | 5°,10°,15° |
| >=12 Meter | 2 Meter | 5°,10°,15° |
(viii) Pole Height:
| Pole Height | Application |
| < 6 Meter | Majority of side streets or alleys, Public gardens and parking Area to make people feel safe |
| 8 Meter | Urban traffic route , the multiplicity of road junctions |
| 10 Meter | Urban traffic routes |
| 12 Meter | Heavily used routes |
| 18 Meter | High mast lighting poles shall be installed at large-scale area such as airports, dockyards, large industrial areas, sports areas and road Intersections. |
(ix) Poles distance from Curb (Offset):
(x) Pole to Pole Spacing
|
Lighting Pole details as per Road |
||||||
| Road | Road Width (Meter) | Pole Arrangement | Lamp (Watts) | Pole to Pole Spacing (Meters) | Mounting Height, (Meters) | Arm Length, (Meters) |
| Expressway | 10 | Twin Central | 250 | 25 To 35 | 12 | 1.5 |
| 15 | 250 | 20 To 35 | 12 | 3.0 | ||
| 20 | Opposite | 250 | 20 To 45 | 12 | 1.5 | |
| 25 | 250 | 20 To 40 | 12 | 1.5 | ||
| 30 | 250 | 20 To 30 | 12 | 1.5 | ||
| 36 | 250 | 20 To 25 | 12 | 1.5 | ||
| 40 | 250 | 20 To 22 | 12 | 1.5 | ||
| Major | 10 | One-side | 250 | 10 To 40 | 10 | 1.5 |
| 15 | 250 | 10 To 45 | 12 | 3.0 | ||
| 10 | Twin Central | 150 | 20 To 37 | 10 | 1.5 | |
| 15 | 250 | 20 To 43 | 12 | 3.0 | ||
| 20 | Opposite | 150 | 20 To 40 | 10 | 3.0 | |
| 25 | 250 | 20 To 45 | 10 | 1.5 | ||
| 30 | 250 | 20 To 45 | 10 | 1.5 | ||
| 36 | 250 | 20 To 45 | 12 | 3.0 | ||
| 40 | 250 | 20 To 45 | 2 | 3.0 | ||
| Collector | 10 | One-side | 150 | 10 To 40 | 10 | 1.5 |
| 15 | 250 | 10 To 50 | 12 | 3.0 | ||
| 10 | Twin Central | 150 | 20 To 40 | 10 | 1.5 | |
| 15 | 150 | 20 To 37 | 12 | 3.0 | ||
| 20 | Opposite | 150 | 20 To 47 | 10 | 1.5 | |
| 25 | 250 | 20 To 48 | 10 | 1.5 | ||
| Rural Highway |
8 | One-side | 150 | 10 To 38 | 8 | 1.5 |
| 10 | 150 | 10 To 37 | 8 | 3.0 | ||
| 15 | 150 | 15 To 38 | 10 | 3.0 | ||
| 10 | Twin Central | 150 | 20 To 45 | 10 | 3.0 | |
| 15 | 150 | 20 To 39 | 12 | 3.0 | ||
| 20 | 1.5 | |||||
| Minor | 4 | One-side | 70 | 10 To 40 | 8 | 1.5 |
| 6 | 70 | 10 To 40 | 8 | 1.5 | ||
| 8 | 70 | 10 To 40 | 8 | 1.5 | ||
| 10 | 70 | 10 To 39 | 8 | 1.5 | ||
| 10 | Twin Central | 70 | 20 To 35 | 8 | 1.5 | |
| 15 | Staggered | 70 | 10 To 20 | 8 | 1.5 | |
| 15 | Opposite | 70 | 20 To 40 | 8 | 1.5 | |
|
Illumination Level |
||
| Classification | Average Illumination (lux) | Ratio Minimum to average illumination |
| Class A1 | 30 | 0.4 |
| Class A2 | 15 | 0.4 |
| Class B1 | 8 | 0.3 |
| Class B2 | 4 | 0.3 |
|
Relationship between Mounting Height and Spacing of Fixtures |
||||
| Pole Arrangement | Cut-off type | Semi cutoff type | ||
| Height | Spacing | Height | Spacing | |
| Single side | >=0.7 X Width of Road | <=3 X Fixture Mounting Height | >=0.8 X Width of Road | <=3.5 X Fixture Mounting Height |
| Both Side Staggered | >=1.5 X Width of Road | <=3.5 X Fixture Mounting Height | >=1.7 X Width of Road | <=4 X Fixture Mounting Height |
| Both Side Opposite | >=0.5 X Width of Road | <=3 X Fixture Mounting Height | >=0.6 X Width of Road | <=3.5 X Fixture Mounting Height |
| Twin central | >=0.7 X Width of Road | <=3.5 X Fixture Mounting Height | >=0.8 X Width of Road | <=4 X Fixture Mounting Height |
|
Pole to Pole Distance vs Lux Level |
||||
| Pole Height | Lamp | Pole to Pole Distance | Max. Illumination (Lux) | Average (Lux) |
| 4 Meter | 15 watt | 12 to 18 Meter | 25 | 18 |
| 5 Meter | 18 watt | 14 to 20 Meter | 30 | 18 |
| 6 Meter | 30 watt | 18 to 24 Meter | 32 | 20 |
| 7 Meter | 50 watt | 21 to 28 Meter | 32 | 20 |
| 8 Meter | 100 watt | 24 to 32 Meter | 40 | 22 |
| 9 Meter | 110 watt | 27 to 35 Meter | 34 | 20 |
| 10 Meter | 140 watt | 30 to 40 Meter | 35 | 22 |
| 12 Meter | 180 watt | 30 to 40 Meter | 33 | 23 |
| 14 Meter | 200 watt | 30 to 40 Meter | 30 | 21 |
|
Lux Vs Mounting Height |
|
| Fixtures (Lux) | Mounting Height |
| 3000 to 10000 Lux | 6 to 7 Meter |
| 10000 to 20000 Lux | 7 to 9 Meter |
| More than 20000 Lux | More than 9 Meter |
|
Road – Pole Details |
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| Road | Road Type | Type of Pole positions | Individual Carriageway Width (Meter) | Central Verge (Meter) | Pole Height above Ground (Meter) | Maximum Pole to Pole Spacing (Meter) | Clearance from Road Edge (Meter) | Bracket Length (Meter) | Tilt Angle | Lighting Specifications | Lamp (Watt) |
| A1 | Dual Carriage | Central Verge | 10 | 1.2 | 12 | 40 | 0.6 | 1 meter | 10° | 35 lux /0.4/ 0.33 |
HP SV 400W |
| A1 | Dual Carriage | Central Verge | 11 | 1.2 | 12 | 40 | 0.6 | 1 meter | 10° | 35 lux /0.4/ 0.33 |
HP SV 400W |
| A1 | Dual Carriage | Central Verge | 12 | 1.2 | 12 | 40 | 0.6 | 1 meter | 10° | 35 lux /0.4/ 0.33 |
HP SV 400W |
| A1 | Dual Carriage | Central Verge | 14 | 1.2 | 12 | 40 | 0.6 | 1 meter | 10° | 35 lux /0.4/ 0.33 |
HP SV 400W |
| A1 | Dual Carriage | Central Verge | 16 | 1.2 | 12 | 40 | 0.6 | 1 meter | 10° | 35 lux /0.4/ 0.33 |
HP SV 400W |
| A1 | Single Carriage | Opposite | 12 | 0 | 12 | 35 | 0.6 | 1 meter | 10° | 35 lux /0.4/ 0.33 |
HP SV 250W |
| A1 | Single Carriage | Opposite | 14.5 | 0 | 12 | 35 | 0.6 | 1 meter | 10° | 35 lux /0.4/ 0.33 |
HP SV 250W |
| A1 | Single Carriage | Opposite | 16 | 0 | 12 | 40 | 0.6 | Around one meter | 10° | 35 lux /0.4/ 0.33 |
HP SV 400W |
| A1 | Single Carriage | Opposite | 18 | 0 | 12 | 40 | 0.6 | 1 meter | 10° | 35 lux /0.4/ 0.33 |
HP SV 400W |
| A1 | Single Carriage | Opposite | 21 | 0 | 12 | 40 | 0.6 | 1 meter | 10° | 35 lux /0.4/ 0.33 |
HP SV 400W |
| Single Carriage | Opposite | 25 | 0 | 12 | 40 | 0.6 | 1 meter | 10° | 35 lux /0.4/ 0.33 |
HP SV 400W | |
| A1 | Single Carriage | Opposite | 31 | 0 | 12 | 40 | 0.6 | 1 meter | 10° | 35 lux/ 0.4/ 0.33 |
HP SV 400W |
| A2 | Single Carriage | Single Sided | 10 | 11 | 30 | 0.6 | < 1.0 meter | 10° | 25 lux /0.4/ 0.33 |
HP SV 250W | |
| A2 | Single Carriage | Single Sided | 9 | 11 | 30 | 0.6 | < 0.5 meter | 10° | 25 lux /0.4/ 0.33 |
HP SV 250W | |
| A2 | Single Carriage | Single Sided | 7 | 11 | 30 | 0.6 | < 0.5 meter | 10° | 25 lux /0.4/ 0.33 |
HP SV 250W | |
| A2 | Single Carriage | Single Sided | 7 | 11 | 30 | 0.6 | < 0.5 meter | 10° | 25lux /0.4/ 0.33 |
HP SV 250W | |
| A3 | Single Carriage | Single Sided | 7 | 8 | 20 | 0.6 | < 0.5 meter | 10° | 20lux /0.4 |
HP SV 150W | |
| Pedestrian Pathway | Single Carriage | Single Sided | 3m-6m | 7.5 | 20-25 | 0.6 | <0.5 meter | 10° | 20 lux /0.4 |
HP SV 150W | |
|
Pole Data |
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| Poles (Meter) | Top Dia (mm) | Bottom Dia (mm) | Thickness (mm) | Base plate (mm) | Single Arm Bracket (mm) | Double Arm Bracket (mm) |
| 3 | 70 | 130 | 3 | 200x200x12 | 1000 | NA |
| 3 | 70 | 130 | 3 | 200x200x12 | NA | 1000 |
| 4 | 70 | 130 | 3 | 200x200x12 | 1000 | NA |
| 4 | 70 | 130 | 3 | 200x200x12 | NA | 1000 |
| 4 | 70 | 130 | 3 | 200x200x12 | 1000 | NA |
| 5 | 70 | 130 | 3 | 200x200x12 | NA | 1000 |
| 5 | 70 | 130 | 3 | 200x200x12 | 1000 | NA |
| 6 | 70 | 130 | 3 | 200x200x12 | NA | 1000 |
| 6 | 70 | 130 | 3 | 200x200x12 | 1000 | NA |
| 7 | 70 | 135 | 3 | 225x225x16 | 1000 | NA |
| 7 | 70 | 135 | 3 | 225x225x16 | NA | 1000 |
| 8 | 70 | 135 | 3 | 225x225x16 | 1000 | NA |
| 8 | 70 | 135 | 3 | 225x225x16 | NA | 1000 |
| 9 | 70 | 155 | 3 | 260x260x16 | 1000 | NA |
| 9 | 70 | 155 | 3 | 260x260x16 | NA | 1000 |
| 9 | 70 | 175 | 3 | 275x275x16 | 1000 | NA |
| 9 | 70 | 175 | 3 | 275x275x16 | NA | 1000 |
| 10 | 70 | 175 | 3 | 275x275x16 | 1000 | NA |
| 10 | 70 | 175 | 3 | 275x275x16 | NA | 1000 |
| 10 | 70 | 200 | 3 | 290x290x16 | 1000 | NA |
| 10 | 70 | 200 | 3 | 290x290x16 | NA | 1000 |
| 11 | 70 | 210 | 3 | 320x320x20 | 1000 | NA |
| 11 | 70 | 210 | 3 | 320x320x20 | NA | 1000 |
| 12 | 70 | 230 | 3 | 325x325x20 | 1000 | NA |
| 12 | 70 | 230 | 3 | 325x325x20 | NA | 1000 |
|
Recommended Levels of Illumination (BIS 1981) (IS 1944) |
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| Type of Road | Road Characteristics | Road Width (Meter) | Average Level of Illumination on Road Surface in Lux | Ratio of Minimum/Average Illumination | Ratio of Minimum/Max Illumination | Type of Luminaire Preferred | Luminas Mounting Height |
| A-1 | Important traffic routes carrying fast traffic | >10.5,12,14,16,18,20,30 | 30 | 0.4 | 33 | Cutoff | 9 To 10 Meter |
| A-2 | Main roads carrying mixed traffic like city main roads/streets, arterial roads, throughways | > 7 m up to 10 m | 15 | 0.4 | 33 | Cutoff | 9 To 10 Meter |
| B-1 | Secondary roads with considerable traffic like local traffic routes, shopping streets | < 7m Colony Roads | 8 | 0.3 | 20 | Cutoff or semi-cutoff | 7.5 To 9 Meter |
| B-2 | Secondary roads with light traffic | 4m,5m, 6m | 4 | 0.3 | 20 | Cutoff or semi-cutoff | 7.5 To 9 Meter |