Traffic Operational Impacts of Higher-conspicuity Sign Materials PDF Download
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Author: Publisher: ISBN: Category : Automobile drivers Languages : en Pages : 164
Book Description
Researchers examined the impacts of various higher-conspicuity sign materials on traffic operations and behavior. A total of eight applications of microprismatic materials were evaluated: fluorescent yellow Chevrons, fluorescent yellow Chevron posts, fluorescent yellow Curve signs, fluorescent yellow Ramp Speed signs, fluorescent yellow Stop Ahead signs, fluorescent red Stop signs, flashing red light emitting diodes (LED) Stop signs, and a red border on Speed Limit signs. Researchers installed these signs at locations where it was believed that improving sign conspicuity would provide a statistically significant benefit to safety-related traffic operations. Traffic operations data collected before and after the sign upgrades included vehicle speeds, edge line encroachments, and stopping compliance.
Author: Publisher: ISBN: Category : Automobile drivers Languages : en Pages : 164
Book Description
Researchers examined the impacts of various higher-conspicuity sign materials on traffic operations and behavior. A total of eight applications of microprismatic materials were evaluated: fluorescent yellow Chevrons, fluorescent yellow Chevron posts, fluorescent yellow Curve signs, fluorescent yellow Ramp Speed signs, fluorescent yellow Stop Ahead signs, fluorescent red Stop signs, flashing red light emitting diodes (LED) Stop signs, and a red border on Speed Limit signs. Researchers installed these signs at locations where it was believed that improving sign conspicuity would provide a statistically significant benefit to safety-related traffic operations. Traffic operations data collected before and after the sign upgrades included vehicle speeds, edge line encroachments, and stopping compliance.
Author: American Association of State Highway and Transportation Officials. Task Force for Roadside Safety Publisher: ISBN: Category : Roads Languages : en Pages : 560
Author: National Research Council (U.S.). Transportation Research Board Publisher: ISBN: Category : Motor vehicle occupants Languages : en Pages : 254
Book Description
This Transportation Research Record contains 28 papers dealing with statistical methods in highway safety research; highway safety data, analysis, and evaluation; occupant protection; and systematic reviews and meta-analysis. The papers address such topics as risk and crash prediction models, crashes on freeways and at signalized intersections, multivehicle crash prediction, speed and safety, red light running crashes, freeway lane closures, ramp design, accident exposure, rumble strip benefits, collisions with median trees, intersection safety, accident reconstruction, safety effects of speed limit changes, geometric design and head-on crashes, deer-vehicle crashes, sport utility vehicle rollover, vehicle occupancy and crash risk, a logit model for studying injury severity, abdominal injuries in rail passengers, healthy transport policies, and meta-analysis.
Author: Douglas J. Mace Publisher: ISBN: Category : Brightness perception Languages : en Pages : 56
Book Description
Static and dynamic legibility studies were conducted to investigate the effects of level of reflectivity, letter series, stroke width, letter spacing, font, letter height, and driver age. The dynamic study also considered the effect of sign size and retroreflectivity on the level of conspicuity. As expected, driver age had the largest effect on both legibility and conspicuity. In fact, the daytime legibility for older drivers is almost as poor as night legibility. Level of retroreflectivity, letter series, and letter height all had a significant effect on legibility. Increases in letter height resulted in proportionate increases in legibility up to about 600 ft (183 m).
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Author: H. Gene Hawkins
Author: American Association of State Highway and Transportation Officials. Task Force for Roadside Safety
Author: Marcus A. Brewer
Author: National Research Council (U.S.). Transportation Research Board
Author: Timothy J. Gates
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Author: Douglas J. Mace
Author: Douglas J. Mace