1. Purpose and Benefits of Road Lighting

Decisions to invest in road-lighting installations can only be made sensibly if there is a clear insight into the purpose and benefits of road lighting. For motorized traffic, road lighting should provide visual performance and visual comfort and help to keep the driver alert. Many different studies have shown that good road lighting can reduce night-time accidents. In countries with peak hours in the hours of darkness, road lighting can increase the capacity of a motorway. In built-up and residential areas, road lighting should also provide visual information for slow-moving traffic such as pedestrians, cyclists and moped users so that they can find their path without the risk of colliding with or stumbling over potentially dangerous hazards. In these areas road lighting should also be aimed at discouraging violence, vandalism and crime. Indeed, crime statistics indicate that there exists a relation between road lighting and crime reduction. Good road lighting can also contribute to the feeling of security of residents. This is important in preventing social isolation, especially of the elderly and young women. Finally, well-designed road lighting can contribute to the attractiveness of an area.