Author: Paul A. BarricklowPublisher:
ISBN:
Category : Roads
Languages : en
Pages : 74
Book Description
Improving Safety at Signalized Intersections Near Vertical Curves
Author: Paul A. BarricklowPublisher:
ISBN:
Category : Roads
Languages : en
Pages : 74
Book Description
Guidelines for Using Decision Sight Distance at Signalized Intersections Near Vertical Curves
Author: Paul A. BarricklowPublisher:
ISBN:
Category : Roads
Languages : en
Pages : 9
Book Description
Whereas standard roadway design ensures that stopping sight distance (SSD) is provided at all locations along a roadway, there is no standard established for when decision sight distance (DSD) is needed with respect to traffic signals. A "reduced decision zone" (RDZ) was identified in the research as the location along a roadway with a vertical curve and a traffic signal beyond the curve where SSD is provided but DSD is not. Essentially, motorists within the RDZ are provided with SSD for unexpected stopping but are not provided with the added decision-making and response time that DSD might otherwise provide as they approach the vertical curve and the downstream traffic signal. Contained within this report are techniques for determining whether an RDZ exists along an existing roadway or has the potential to exist in a proposed design. It is suggested that intersections not be located within the RDZ.
Recent Geometric Design Research for Improved Safety and Operations
Author: Kay FitzpatrickPublisher:
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 144
Book Description
TRB's National Cooperative Highway Research Program (NCHRP) Synthesis 299: Recent Geometric Design Research for Improved Safety and Operations reviews and summarizes selected geometric design research published during the 1990s, particularly research with improved safety and operations implication.
Guidelines for the Use of Countermeasures to Reduce Crashes on Approaches to Signalized Intersections Near Vertical Curves
Author: Paul A. BarricklowPublisher:
ISBN:
Category : Roads
Languages : en
Pages : 9
Book Description
The research described herein documents an investigation into countermeasures that can be used to provide motorists with advance notification of traffic signals or queues from those signals that are located beyond the motorists' line of sight due to a vertical curve. A "reduced decision zone" (RDZ) was identified in the research as the location along a roadway with a vertical curve and a traffic signal beyond the curve where stopping sight distance (SSD) is provided but decision sight distance (DSD) is not. Essentially, motorists within the RDZ are provided with SSD for unexpected stopping but are not provided with the added decision-making and response time that DSD might otherwise provide as they approach the vertical curve and the downstream traffic signal. Contained within this report are techniques for determining whether an RDZ exists along an existing roadway. In cases where a traffic signal or queue from a signal is located within the RDZ, guidance is provided on both the type and location of countermeasures that can be used.
Recent Roadway Geometric Design Research for Improved Safety and Operations
Author: Marcus BrewerPublisher: Transportation Research Board
ISBN: 0309223598
Category : Technology & Engineering
Languages : en
Pages : 90
Book Description
RB’s National Cooperative Highway Research Program (NCHRP) Synthesis 432: Recent Roadway Geometric Design Research for Improved Safety and Operations reviews and summarizes roadway geometric design literature completed and published from 2001 through early 2011, particularly research that identified impacts on safety and operations.
Engineering Solutions to Improving Operations and Safety at Signalized Intersections Near Railroad Grade Crossings with Active Devices
Author: Publisher:
ISBN:
Category : Highway-railroad grade crossings
Languages : en
Pages : 160
Book Description
A Methodology for Integrating Roadway Safety Hardware Management Into the Overall Highway Asset Management Program
Author: Zongzhi LiPublisher:
ISBN:
Category : Highway departments
Languages : en
Pages : 156
Book Description
Improved Safety Information to Support Highway Design
Author: Ronald C. PfeferPublisher: Transportation Research Board
ISBN: 9780309066082
Category : Technology & Engineering
Languages : en
Pages : 184
Book Description
Improving Operational Safety on Local Roads and Streets
Author: Traffic Engineering Handbook
Author: ITE (Institute of Transportation Engineers)Publisher: John Wiley & Sons
ISBN: 1118762304
Category : Technology & Engineering
Languages : en
Pages : 688
Book Description
Get a complete look into modern traffic engineering solutions Traffic Engineering Handbook, Seventh Edition is a newly revised text that builds upon the reputation as the go-to source of essential traffic engineering solutions that this book has maintained for the past 70 years. The updated content reflects changes in key industry standards, and shines a spotlight on the needs of all users, the design of context-sensitive roadways, and the development of more sustainable transportation solutions. Additionally, this resource features a new organizational structure that promotes a more functionally-driven, multimodal approach to planning, designing, and implementing transportation solutions. A branch of civil engineering, traffic engineering concerns the safe and efficient movement of people and goods along roadways. Traffic flow, road geometry, sidewalks, crosswalks, cycle facilities, shared lane markings, traffic signs, traffic lights, and more—all of these elements must be considered when designing public and private sector transportation solutions. Explore the fundamental concepts of traffic engineering as they relate to operation, design, and management Access updated content that reflects changes in key industry-leading resources, such as the Highway Capacity Manual (HCM), Manual on Uniform Traffic Control Devices (MUTCD), AASSHTO Policy on Geometric Design, Highway Safety Manual (HSM), and Americans with Disabilities Act Understand the current state of the traffic engineering field Leverage revised information that homes in on the key topics most relevant to traffic engineering in today's world, such as context-sensitive roadways and sustainable transportation solutions Traffic Engineering Handbook, Seventh Edition is an essential text for public and private sector transportation practitioners, transportation decision makers, public officials, and even upper-level undergraduate and graduate students who are studying transportation engineering.