Author: Edwin A. LagergrenPublisher:
ISBN:
Category : Reflectance
Languages : en
Pages : 168
Book Description
Traffic Sign Retroreflectivity Measurement Using Human Observers
Author: Edwin A. LagergrenPublisher:
ISBN:
Category : Reflectance
Languages : en
Pages : 168
Book Description
Implementation Strategies for Sign Retroreflectivity Standards
Author: Kent L. BlackPublisher: Transportation Research Board
ISBN: 9780309048699
Category : Transportation
Languages : en
Pages : 60
Book Description
Freeway Guide Sign Replacement
Author: Hugh W. McGeePublisher: Transportation Research Board
ISBN: 9780309049023
Category : Transportation
Languages : en
Pages : 52
Book Description
This synthesis will be of interest to traffic engineers, planners, and others interested in making sure that motorists' needs for directional information on freeways are being met. Information is provided on policies and procedures used by states in evaluating freeway guide signs and replacing those that are outdated or deteriorated. Many signs on freeways and other controlled-access highways have exceeded their service life and are no longer serving motorists' needs. This report of the Transportation Research Board describes the policies, proceduress, and criteria used by states for freeway sign evaluation and replacement programs.
A Sign Inventory Study to Assess and Control Liability and Cost
Author: Stephanie C. VereenPublisher:
ISBN:
Category : Reflectance
Languages : en
Pages : 258
Book Description
The main objective of this project was to determine, quantify, and present to the North Carolina Department of Transportation (NCDOT) alternative approaches for meeting the Federal Highway Administration's (FHWA) proposed minimum level of retroreflectivity for signs. This study used knowledge of the current NCDOT sign maintenance practices to synthesize a list of components and alternatives to comply with the standard. The fundamental contribution of the work lies in creating alternative methods to evaluating sign retroreflectivity to ensure compliance with a standard while minimizing the cost and labor required to do so.
Sign Retroreflectivity Study
Author: Austin Lyons BischoffPublisher:
ISBN:
Category :
Languages : en
Pages : 136
Book Description
Government Reports Announcements & Index
Author: Service Life of Retroreflective Traffic Signs
Author: Kent L. BlackPublisher:
ISBN:
Category : Reflective materials
Languages : en
Pages : 120
Book Description
The ability to predict coefficient of retroreflection (RA) values for inservice traffic signs is critical for the Federal Highway Administration's (FHWA) Sign Management System (SMS). Within the SMS, tools for predicting inservice retroreflective performance of traffic signs and for determining the motorist's visual needs are required. The research which focuses on the motorist's needs in terms of traffic sign luminance, legibility distance, conspicuity, etc., is on-going by others. The project reported on here evaluated the effects of climatological and geographic variables on sign sheeting deterioration. A national data collection effort was undertaken. Data samples from 6,275 traffic signs were collected across the country.
Proceedings, Workshop on Field Inspection and Rehabilitation of Traffic Control Devices
Author: Publisher:
ISBN:
Category : Road markings
Languages : en
Pages : 268
Book Description
The Federal Highway Administration (FHWA) has begun a number of initiatives to improve signing on the Nation's roadways. These include workshops to obtain input from experts across the country, a review of each State's highway sign replacement and refurbishing program, and a training course. This report documents the proceedings of the workshops, one held in the Western United States and one in the Eastern United States. The workshops opened with a plenary session on Issues, Needs, and the FHWA Research Program, followed by a plenary session on Development of Minimum Requirements. The program continued with a panel discussion on Performance Standard Criteria, followed by a plenary session on Materials Selection. Breakout sessions on freeway signing, non-freeway signing, and motorist services and tourist-oriented signing completed the first day of the workshops. The second day opened with reports of the breakout sessions and continued with a plenary session on Field Assessment Techniques. A plenary session on Maintenance Procedures and Programs followed. The second day ended with breakout sessions on sign replacement methods, using contracting versus in-house and prison industries, and traffic control during sign replacement. The third day opened with reports on the previous day's breakout sessions, followed by a plenary session on Improved Inventory Techniques. The workshops closed with a Look to the Future plenary session. This report details the remarks made by the panelists and the comments and concerns of the participants on each of these issues.
Transportation... Weekly Government Abstracts
Author: Synthesis of Highway Practice
Author: National Cooperative Highway Research ProgramPublisher:
ISBN:
Category : Highway engineering
Languages : en
Pages : 644
Book Description