Nuisance provisions of the Public Health etc (Scotland) Act 2008: guidance
Procedural guidance on the statutory nuisance provisions outlined in the Public Health etc. (Scotland) Act 2008.
SECTION 3 - MITIGATION MEASURES
Macy cases of potential light nuisance can be remedied by changing the light specification, relocating the offending light, by readjusting its aim or by fitting a screen to control the spread of light. The following summarises some of the impacts of changes to lighting schemes:-
| Parameter |
Change |
Advantages |
Disadvantages |
Design Impact |
|---|---|---|---|---|
| Mounting Height |
Increase height Reduce height |
Less spill Simple shielding Less glare Less conspicuous in the day |
More conspicuous in the day More spill Difficult to shield More glare |
Narrow beams Downward aiming Smaller lamps Wider beams Upward aiming |
| Set Back |
Increased Reduced |
Less spill Simple shielding |
More spill Difficult to shield |
Narrow beams Higher aiming Wider beams Lower aiming |
| Luminous flux output |
Increased Decreased |
More efficient |
More spill Less efficient |
Higher mounting Fewer luminaries Reduced Control More luminaries Increased control |
| Beam type |
Narrow Wide |
Controls spill Reduced shielding |
More luminaries Reduces containment Difficult to shield |
Allows good directivity Limited directivity |
| Distance from Property |
Increased Decreased |
Reduced spill impact Simple shielding Isolation from receptor |
Increased spill Difficult shielding |
Less effect on receptor Need good light control |
| Vertical aiming angle |
High Low |
Less spill Lamp less visible Simple shielding |
More spill More visible lamp Difficult to shield |
Higher vertical illuminance High horizontal illuminance Low vertical illuminance Simple spill control |
A copy of the Guidance Notes for the Reduction of Obtrusive Light by the Institution of Lighting Engineers ( ILE) 2005 [ http://www.ile.co.uk] is reproduced at Annex 1 of this Appendix..
In addition to this guidance there is useful guidance provided in CIE Publication 150:2003 Guide on the limitation of the effects of obtrusive light from outdoor lighting installations Published by the "International Commission on Illumination ( CIE).
One of the key control methods for minimizing the impact of new or substantially changed lighting schemes is through planning controls. Planning conditions may cover such matters as:
- hours of illumination;
- light levels;
- column heights;
- specification and colour treatment for lamps and luminaires;
- the need for full horizontal cut-off;
- no distraction to the highway;
- levels of impact on nearby dwellings;
- use of demountable columns;
- retention of screening vegetation;
- use of planting and bunding to contain lighting effects;
- erection of demonstration luminaires; and
- review of lighting impacts after installation.
Contact
Email: Central Enquiries Unit ceu@gov.scot
There is a problem
Thanks for your feedback