Category:901 Lighting

Nighttime crash rates are higher than daytime rates partially due to reduced visibility. Fixed-source lighting such as a luminaire tends to reduce crashes in urban and suburban areas with concentrations of pedestrians and intersections.

Different policies apply to:

- lighting to be provided, operated and maintained at state expense,

- lighting to be provided, operated and maintained at the expense of the local political subdivision,

- lighting to be adjusted at state expense and operated and maintained at the expense of the local political subdivision,

- state participation in continuous freeway lighting by a local political subdivision,

- and lighting proposed by other political subdivisions on state highways.

When designing, installing, programming and maintaining lighting, factors such as light source and intensity and [[901.8 Circuiting|circuiting] must be addressed. Guidelines for high pressure sodium luminaire performance and computation of roadway illumination, future lighting and dusk-to-dawn lighting policy are discussed in this article.

This article also includes a glossary, a discussion on the preparation of plans and electrical components.