Analysis Of Visibility Observation Methods

This report concludes the first phase of the objective visibility observation task. It was primarily a literature search of state-of-the-art in visibility observations and measurements. This portion of the task was designed to provide background information on which to base future phases directed toward automated visibility observations.

This guide replaces the 1984 publication entitled An Informational Guide for Roadway Lighting. It has been revised and brought up to date to reflect current practices in roadway lighting. The guide provides a general overview of lighting systems from the point of view of the transportation departments and recommends minimum levels of quality. The guide incorporates the illuminance and luminance design methods, but does not include the small target visibility (STV) method.

Proceedings of the 11th ESLAB Symposium, Frascati, Italy, May 11-14, 1976