"Nighttime." . . "Accident types." . . "Interchanges." . . . . "Freeways." . . "Lighting systems." . . "Regression." . . "Road Lighting." . . "Effectiveness of freeway lighting final report"@en . . . . . . . . . . . . "Effectiveness of freeway lighting. Final report"@en . . . . . . . . . . . . . . . "Effectiveness of freeway lighting : final report"@en . . . "The project was undertaken to determine whether variation in the lighting of freeways leads to a variation in the number of nighttime accidents and if so, to what extent. The study found significant indications that increased freeway lighting makes a difference in the frequency of a variety of distinct accident types; increased lighting was not found to reduce total accident rates. The analysis was performed using stepwise multiple regression techniques. An analysis was conducted of the Interstate System Accident Research (ISAR-2) data base for information or implications useful in achieving study objectives."@en . . . . "Effectiveness of freeway lighting" . "Effectiveness of freeway lighting"@en . "Effectiveness of freeway lighting : final report : prepared for Federal Highway Administration, Offices of Research & Development, Traffic Systems Division"@en . . "Spot Improvements." . .