BS 5489-1:2020 pdf download
BS 5489-1:2020 pdf download.Design of road lighting Part 1: Lighting of roads and public amenity areas ——Code of practice.
4 General recommendations
NOTE Attention is drawn to the statuemy requfrements listed In references (1) to (L5j. There is no statutory requirement top road lighting. Neither are tower any statziteey requirements to install a particular doss of lighting if a decision is mode to light a particular road. Hoiveeer, there ore statutes that empower highway authorttms to light roads The provision of rood lighting on a previously unSEt road might statutory requirements and might cruise the imposition speed limtis
4.1 Reasons for road lighting
COMMENTARY ON 4.1
Road lighting encompasses the lighting of all types of highway and public thoroughfare, assisting traffic safety and ease of passagefor all users In this respect, good lighting c.an be one of the measures used to reduce night-time traffic collisions It can allow pedestrians to see hazards, orientate themselws recognize other pedestrians and feel more secure. It also has a wider social role, with the potential of helping to reduce crime and the fear of crime, and con contribute to commercial and social use at night. of town centres and tourist locations., by improving the daytime and night-time appearance.
Transport and environment policy is increasingly emphasizing the need to improve conditions for walking and cycling. One factor that potentially influences decisions to travel by these modes is the quality of walking and cycling routes After dark, lighting has an important role toplay In helping to create acceptable conditions. Traditionally, fbotway lighting has often been considered little beyond functional lighting for the space alongside the carriageway. However, lighting can offer more, and con contribute to creating an environment that is pleasant and interesting as well as satisfying the basic functional objectives.
The provision of traffic calming measures might require particular lighting arrangements. Further guidance relating to lighting for traffic calming features Is given In ILP TR25 (ifs!.
Recommendations for the selection of lighting classes are given in Ckiusc £ with additional guidance in Annex A.
Road lighting should provide visual clues and reveal obstacles so that sate vehicular progress is possible. It should reveal all the features of the road and traffic that are important to all road users. including pedestrian;.
Road lighting should not be proposed for the sole purpose of providing visual guidance for traffic; however, where practicable, lighting should be arranged to assist such guidance, and the components of the lighting Installation should be arranged such as not to visually mislead motorists as to the route ahead (see 5L3 and 6L).
When lighting Is provided on a previously unlit road, guidance should be obtained to determine whether any tr.ilTic signs will have to be illuminated, and the impact that the new lighting might have on ecology (see 4.L4) should be taken Into account.
When lighting Is added to an area prevrnusly unlit. the distance to other existing lighting should be arranged such there Is not a light, dark, light effect created. The travelling speed should be determined using the 85th percentile oIsurveyed speed or the speed limit. ha section of road Is to be left unlit then the minimum unlit section of road should be agreed with the Lighting Authority. A road safety review and a risk assessment should be undertaken prior to agreement of unlit section.
NOTE There is no recommended minimum distance between unfit sections of road. However, one ‘ride of thumb:
4.2Environment
COMMENTARY ON 4.2
Environmental issues associated with road lighting are prime considerations when designing a new orreplacement lighting scheme.
The environmental impact of lighting can be reduced by varying the lighting level to allow theappropriate lighting class to be applied at the relevant time, even switching off at certain times ifdeemed appropriate. Further guidance is given in 4.3.5.
This subclause indicates some matters that need to receive attention and gives recommendations, but itis recognized that in aesthetics, subjective judgements can apply.
