Browsing by Subject "Signs"

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    Effect of Signing and Lane Markings on the Safety of a Two-Lane Roundabout
    (Minnesota Department of Transportation, 2014-01) Hourdos, John; Richfield, Veronica; Acosta, Luzcenit
    This report presents a study of the impact lane markings and signing have on driving behavior at a two-lane roundabout located in Richfield, Minnesota. After its completion in 2008, this roundabout sustained a suspiciously high amount of crashes. In response, through this study, engineers experimented with changes in the roundabout’s signs and lane markings, as roundabout design regulations are relatively lax and nonspecific in contrast to those for standard signalized intersections. An observational study was conducted that reduced 216 hours of before and after video records of the roundabout into a database of all the violations committed by drivers. Along with the observational data, crash records were analyzed and demonstrated that improper turns and failing to properly yield account for the majority of collisions. The changes implemented in the approaches to the roundabout and specifically the extension of the solid line seems to have reinforced the message to the drivers that they must select the correct lane before approaching the roundabout entrance. Although choosing the correct lane does not directly address yielding violations, it does reduce the occurrence of drivers conducting an improper turn and to some extent reduces the need for a driver to change lanes within the roundabout. The implemented changes produced a 48% reduction in normalized occurrences of improper turns, and a 53% reduction in normalized occurrences of drivers choosing the incorrect lane a month after the changes, while a year later, these reductions were 44% and 50%, respectively.
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    Professional Interpretive Planners Provide Recommendations for Writing Engaging Text
    (2019-01-01) Eidbo, Forest
    Interpretive signage is the dominant medium of education at most museums, zoos, and parks. While many studies examine how visitors read signage, none have looked at how professionals write them. Using existing literature as a framework, this study collects best practices from experts in the field on how to produce interpretive text. Through two online surveys to interpretive planners, this study collects the opinions on the use of questions, personal pronouns, figurative language, audience and more. The results from the two rounds of surveying produced 12 recommendations for interpretive writers to create signs like experts.