Table 1 - List of road controlling authorities in the survey of pedestrian crossing floodlighting
Road controlling authority | No. of pedestrian crossings | |
---|---|---|
Surveyed | Meeting NZS6701 (20 lux min) | |
Buller |
4 |
3 |
Central Otago |
1 |
0 |
Christchurch City |
11 |
2 |
Dunedin |
7 |
5 |
Gore |
3 |
2 |
Grey |
3 |
0 |
Hamilton |
6 |
5 |
Hutt City |
6 |
3 |
Invercargill |
7 |
0 |
Manawatu |
5 |
1 |
Marlborough |
11 |
5 |
Masterton |
5 |
2 |
Napier |
7 |
2 |
Nelson |
7 |
2 |
New Plymouth |
6 |
2 |
North Shore |
6 |
3 |
Palmerston North |
6 |
5 |
Papakura |
6 |
0 |
Queenstown-Lakes |
2 |
0 |
Rodney |
1 |
0 |
Rotorua |
1 |
1 |
Stratford |
2 |
1 |
Taupo |
1 |
0 |
Tauranga |
5 |
1 |
TNZ Christchurch |
3 |
0 |
TNZ Hamilton |
8 |
4 |
TNZ Napier |
4 |
3 |
Waitakere |
5 |
1 |
Wellington |
8 |
6 |
Whangarei |
5 |
1 |
Total |
2 |
60 (39%) |
Figure 1: Minimum illumination on pedestrian crossings
From Figure 1 it can be seen that:
39% of floodlit crossings met the 20 lux standard required by NZS 6701.
18% of floodlit crossings met the 40 lux recommendation specified in TR11(4)
At each site the light source used to floodlight the crossing was noted. Tables 2 and 3 below relate the light source with the lux level achieved and whether the lamp was operating at the time of the survey.
Observations from these tables:
The main light sources used to floodlight pedestrian crossings were, in order: High pressure sodium (42%), mercury vapour (38%), and halogen (9%). In 9% of cases there was a different source at each end of the crossing (termed "mixed" in Tables 2 & 3).
70% of pedestrian crossings lit with high pressure sodium fittings met NZS 6701. This compares with just 14% of the crossings lit with mercury vapour fittings. [Table 2]
The average lux values for high pressure sodium was 31 lux (min) compared to just 13 lux (min) for mercury vapour fittings. [Table 2]
High pressure sodium proved to be the most reliable source. 5% of pedestrian crossings lit with high pressure sodium, 19% lit with mercury vapour and 23% lit with halogen fittings had at least one lamp not working at the time of the survey. [Table 3]
Crossings with this source | Crossings which met the standard | Average of the lowest lux on the crossing | |||
---|---|---|---|---|---|
Light source | No. | % | No. | % | |
High pressure sodium (SON) |
64 |
42% |
45 |
70% |
31 lux |
Mercury vapour |
57 |
38% |
8 |
14% |
13 lux |
Halogen |
13 |
9% |
5 |
38% |
19 lux |
Mixed (usually sodium with mercury) |
14 |
9% |
1 |
7% |
13 lux |
Low pressure sodium |
3 |
2% |
0 |
0% |
13 lux |
Metal halide |
1 |
1% |
1 |
100% |
39 lux |
Total |
152 |
100% |
60 |
39% |
Table 3 - Lamp failures
Light source | No of crossings lit with this source | No of crossings with lamp failure | Percentage of crossings with lamp failure |
---|---|---|---|
High pressure sodium |
64 |
3 |
5% |
Mercury vapour |
57 |
11 |
19% |
Halogen |
13 |
3 |
23% |
Mixed (usually sodium with mercury) |
14 |
2 |
14% |
Low pressure sodium |
3 |
0 |
0% |
Metal halide |
1 |
0 |
0% |
TOTAL |
152 |
19 |
13% |
The survey obtained data on whether Belisha beacons were present and, if so, whether they were operating.
Almost all (97%) of floodlit pedestrian crossings surveyed had Belisha beacons installed.
3 crossings had fluoro discs installed and 2 crossings had neither fluoro discs nor Belisha beacons.
27 (17%) of the crossings that had Belisha beacons installed had at least one which was not operating at the time of the survey.
Measurements of the lighting levels both on, and within 3 metres of a pedestrian platform were made at 66 sites.
The minimum lux readings were compared with the requirements of the joint standard AS/NZS 1158 (Category P and V). In this standard the minimum lux requirements are related to the level of lighting on the surrounding road.
In particular for:
category P (minor) roads Minimum = 3.5 lux
category V4 roads Minimum = 5 lux
category V3 roads Minimum = 7.5 lux
category V2 roads Minimum = 10 lux
category V1 roads Minimum = 15 lux
Observations
63% of pedestrian platforms met the AS/NZS 1158 standard. This is substantially higher than the 39% compliance found for pedestrian crossing floodlighting.
Modern city centre pedestrian platforms were generally in well lit areas and met the standard comfortably.
No. of platforms | ||
---|---|---|
Road controlling authority | in the survey | meeting AS/NZS 1158 |
Central Otago |
2 |
2 |
Christchurch |
2 |
1 |
Dunedin |
3 |
3 |
Gore |
2 |
0 |
Grey |
2 |
1 |
Hamilton |
3 |
2 |
Hutt |
2 |
2 |
Invercargill |
3 |
1 |
Manawatu |
5 |
1 |
Marlborough |
4 |
2 |
Napier |
3 |
0 |
Nelson |
4 |
1 |
New Plymouth |
2 |
2 |
Palmerston North |
4 |
4 |
Papakura |
2 |
0 |
Rotorua |
5 |
4 |
Taupo |
9 |
8 |
Tauranga |
2 |
2 |
Waitakere |
2 |
1 |
Wellington |
3 |
3 |
Total |
64 |
(63%) |