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Comparison of the Safety of Lighting Options on Urban Freeways. HHS Summary Report.
| 题名： | Comparison of the Safety of Lighting Options on Urban Freeways. HHS Summary Report. |
| 作者： | Griffith-M.S. |
| 关键词： | *Traffic-safety; *Street-ligthing; *Urban-areas.;Accident-statistics; Fatalities-; Travel-; Nighttime-; Countermeasures-; Traffic-flow; Traffic-congestion; Freeways-; Evaluation-; Highway-transportation. |
| 摘要： | Nationwide accident statistics show that more than 50 percent of fatal accidents occur during the hours of darkness. Because only 25 percent of travel occurs during the same period, the fatality rate is about three times higher at night than during the day. The installation of overhead lighting is a potential countermeasure to this nighttime accident problem. However, this is expensive, and much of the research to date offers inconclusive results about its effect on highway safety. Many previous studies have evaluated the relationship of urban freeway lighting and highway safety. However, the majority of these studies were conducted in the 1960's and early 1970's, and the results from these studies may be outdated. On our Nation's highways, there have been many changes in traffic flow, vehicle fleet, and road-user demography in the past 20 to 30 years. Clearly, the volume of traffic on urban freeways is significantly higher today, and congestion is a greater problem. |
| 报告类型： | 科技报告 |
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