Author: P. L. OlsonPublisher:
ISBN:
Category :
Languages : en
Pages : 251
Book Description
Determine the luminous requirements of retroreflective highway signing. Final report
Author: P. L. OlsonRetroreflective Requirements for Traffic Signs - a STOP Case Study. Final Report
Author: Juan M. MoralesPublisher:
ISBN:
Category : Reflectors (Safety devices)
Languages : en
Pages : 32
Book Description
This study determined the performance of STOP signs based on their retroreflective properties. Thirty-five 30-inch STOP signs, including engineering grade and high intensity, were measured in the laboratory to determine their retroreflective properties. A subset of ten signs was taken to the field to determine how far they could be recognized by paid subjects. Mathematical relationships between the various retroreflective properties and recognition distance were developed. The overall specific intensity per unit area (SIA) was found to be a good measure for estimating the recognition distance of STOP signs.
Determine the Luminous Requirements of Retroreflective Highway Signing
Author: Paul L. OlsonPublisher:
ISBN:
Category : Traffic signs and signals
Languages : en
Pages : 239
Book Description
Design of Work Zone Flagger's Vest. Final Report
Author: Donald A. GordonMinimal Luminance Requirement for Official Highway Signs. Final Report
Author: Douglas J. MaceFederally Coordinated Program of Research and Development in Highway Transportation
Author: Review of Retroreflective Sign Sheeting Materials, Practices and Policies. Final Report
Author: Gerardo W. FlintschSummary of Progress - National Cooperative Highway Research Program
Author: National Cooperative Highway Research ProgramPublisher:
ISBN:
Category : Highway research
Languages : en
Pages : 244
Book Description
Evaluation of Overhead Sign Background Materials and Mercury Vapor Sign Lights
Author: H. Dexter JonesPublisher:
ISBN:
Category : Traffic signs and signals
Languages : en
Pages : 132
Book Description
Verhead Guide Signs can be illuminated to sufficient target value and uniformity with certain 100 watt mercury vapor lighting units. Coating materials based on thermal setting polyester, and thermal setting polyvinylidene fluoride have been found to be satisfactory coating materials for Overhead Guide Signs. Preliminary field evaluations and legibility studies indicate that approximately 40% of the Overhead Guide Signs in the State would not require illumination if the legend is reflective.
Implementation Strategies for Sign Retroreflectivity Standards
Author: Kent L. BlackPublisher: Transportation Research Board
ISBN: 9780309048699
Category : Transportation
Languages : en
Pages : 60
Book Description