National Academies Releases Nighttime Overhead Signage Luminance Levels

The National Academies Press has issued an 80-page report entitled “Guidelines for Nighttime Overhead Sign Visibility.” It includes a chart that’s headlined “Luminance Levels for Overhead Signs.” It lists five different visual complexity levels, ranging from a dark rural area to a commercial downtown district. It then suggests minimum luminance levels in terms of candelas per square […]

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Texas/Pennsylvania DOT Studies Says Clearview Font Improves Sign Legibility

A study conducted jointly by the Texas and Pennsylvania Departments of Transportation concluded that the Clearview font increased the visibility distance for drives by 12% versus the existing Series E Modified font. In 1994 the Federal Highway Administration determined that highway signs were no longer visible enough for a population that included older drivers. Over […]

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The Signage Foundation Inc. becomes the Sign Research Foundation

The Sign Research Foundation (SRF), formerly The Signage Foundation, has a new name, look and website (www.signresearch.org), but it will continue its mission of empowering communities through research on vibrant and effective sign strategies, systems and codes. “The new name better aligns with our mission of focusing on research into signs,” said Sapna Budev, SRF’s […]

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Texas A&M Studies EMCs and Traffic Accidents

In 2012, Texas A&M University’s Texas Transportation Institute conducted a study to see if EMCs cause traffic accidents. Research included data from the FHWA’s own Highway Safety Information System (HSIS),a comprehensive database of crash records from several states. They identified 135 cites in which EMCs had recently been erected. Researchers used the empirical Bayes method […]

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Do Electronic Message Centers Cause Traffic Accidents?

Subjective statements often suggest that electronic message centers (EMCs) cause traffic accidents because they are distracting. Yet, is there any empirical evidence that documents this theory? No. In 1980, the Federal Highway Administration published its “Safety and Environmental Design Considerations in the Use of Commercial Electronic Variable-Message Signs” study, which was hugely inconclusive. It conducted […]

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