Checklist of tasks to perform on site during car park lighting audit.
External car park lighting lux levels.
Have you ever dropped your keys in a shadowy car park.
Exterior car parks have three levels of lighting depending on usage and range from low medium and high.
Walkways exclusively for pedestrians 5 lux.
It is important with car parks to design them so that light comes from several directions.
Earlier it was common with light.
If the car park is in a residential area consider light spill into back gardens or windows as this could constitute a statutory nuisance if the resident complains to their local authority.
It is also important not to over light to control energy consumption and avoid light pollution spill.
Night light on a building.
In the building in the area closest to windows the light level may be reduced to approximately 1 000 lux.
External illumination lux levels.
As a guide the following table gives examples of lighting levels.
Maximum allowed spacing between emergency lights as per as nzs 2293 1 classification tables for enlighten s car park luminaire range.
32 000 to 100 000 lux.
Additional lighting equipment is often necessary to compensate the low levels.
The car park lighting designer or lighting consultant would undertake a risk assessment based on the anticipated vehicle pedestrian crime and type of use to determine the lighting category.
Entrance balconies and garden areas.
Task undertaken eh ave lux eh min lux uniformity ratio residential estate access road with moderate night time public use road verge footpath.
700 to 16 000 lux.
250 to 300 lux.
Night time urban street.
This will consider external lighting for residencies with external entrances and areas i e.
Who should use the guide.
Spacing tables for maximum allowed distances between luminaires to achieve the levels required by the above.
30 000 to 40 000 lux.
Guidance on illumination levels is found in national standards such as en 12464 2 or bs 5489.
Lighting should be concentrated onto the main car parking area with careful consideration given to adjacent buildings.
In the middle area its may be as low as 25 50 lux.
The outdoor light level is approximately 10 000 lux on a clear day.
This is to reduce the chance of deep shadows between the cars.
