Author: Helmut T. Zwahlen
Publisher:
ISBN:
Category : Reflectors (Safety devices)
Languages : en
Pages : 66
Book Description
Optimal Placement of Reflective Pavement Markers
Author: Helmut T. Zwahlen
Publisher:
ISBN:
Category : Reflectors (Safety devices)
Languages : en
Pages : 66
Book Description
Publisher:
ISBN:
Category : Reflectors (Safety devices)
Languages : en
Pages : 66
Book Description
Optimal Application and Placement of Roadside Reflective Devices for Curves on Two-lane Rural Highways
Author: Helmut T. Zwahlen
Publisher:
ISBN:
Category : Curves in engineering
Languages : en
Pages : 112
Book Description
A survey of the current delineation practices in the various U.S. States and Canadian provinces indicated the importance of a set of quantitative delineation guidelines. According to the survey, no computer assisted methods are used for the curve delineation task. The evaluator responses before and after curve delineation, with the objective to obtain input for the curve delineation tasks, indicate that (1) evaluators have difficulties to agree on the type, number, and location of curve delineation devices, just by looking at a curve while driving with low beams at night; 2) subjective evaluation of an undelineated curve tends to provide a recommended number of devices that is considerably lower than the actual number required when placing four devices within a driver's functional visual field of view; 3) the optimal type, number, and location of the delineation devices should be computed with a set of algorithms implemented in a software package. These findings support the development and use of a knowledge-based, interactive software which computes the delineation layout. The approach and center speed measurements before and after delineation installation were conducted in order to assure that there are no adverse effects on driver behavior due to delineation. The measurements indicate that there is no systematic pattern in speed increase or speed reduction before and after the delineation devices are installed.
Publisher:
ISBN:
Category : Curves in engineering
Languages : en
Pages : 112
Book Description
A survey of the current delineation practices in the various U.S. States and Canadian provinces indicated the importance of a set of quantitative delineation guidelines. According to the survey, no computer assisted methods are used for the curve delineation task. The evaluator responses before and after curve delineation, with the objective to obtain input for the curve delineation tasks, indicate that (1) evaluators have difficulties to agree on the type, number, and location of curve delineation devices, just by looking at a curve while driving with low beams at night; 2) subjective evaluation of an undelineated curve tends to provide a recommended number of devices that is considerably lower than the actual number required when placing four devices within a driver's functional visual field of view; 3) the optimal type, number, and location of the delineation devices should be computed with a set of algorithms implemented in a software package. These findings support the development and use of a knowledge-based, interactive software which computes the delineation layout. The approach and center speed measurements before and after delineation installation were conducted in order to assure that there are no adverse effects on driver behavior due to delineation. The measurements indicate that there is no systematic pattern in speed increase or speed reduction before and after the delineation devices are installed.
Federally Coordinated Program of Highway Research, Development and Technology
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 838
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 838
Book Description
Department of Transportation and Related Agencies Appropriations for 2003: 2003 budget justifications
Author: United States. Congress. House. Committee on Appropriations. Subcommittee on Department of Transportation and Related Agencies Appropriations
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1830
Book Description
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1830
Book Description
Federally Coordinated Program of Highway Research, Development, and Technology. Annual Progress Report. Fiscal Year 1985
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 704
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 704
Book Description
Federally Coordinated Program of Research and Development in Highway Transportation
Author:
Publisher:
ISBN:
Category : Highway engineering
Languages : en
Pages : 688
Book Description
Publisher:
ISBN:
Category : Highway engineering
Languages : en
Pages : 688
Book Description
Department of Transportation and Related Agencies Appropriations for 2003
Author: United States. Congress. House. Committee on Appropriations. Subcommittee on Dept. of Transportation and Related Agencies Appropriations
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1836
Book Description
Publisher:
ISBN:
Category : United States
Languages : en
Pages : 1836
Book Description
Optimization of Traffic Lane Delineation
Author: United States. Federal Highway Administration. Office of Research
Publisher:
ISBN:
Category : Road markings
Languages : en
Pages : 16
Book Description
Publisher:
ISBN:
Category : Road markings
Languages : en
Pages : 16
Book Description
Traffic Stripe Removal
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 68
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 68
Book Description
Evaluation of ODOT Research and Development Implementation Effectiveness
Author: Colby V. Ardis
Publisher:
ISBN:
Category : Highway research
Languages : en
Pages : 126
Book Description
Publisher:
ISBN:
Category : Highway research
Languages : en
Pages : 126
Book Description