TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-R19B-RW-1: Bridges for Service Life Beyond 100 Years: Service Limit State Design explores design codes critical for bridges to reach a service live of beyond 100 years. The report also addresses performance measures and design procedures that utilize criteria to maximize the actual life of a bridge system. The weigh-in-motion ...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L32A-RW-1: Train-the-Trainer Pilot Courses for Incident Responders and Managers describes pilot tests of the National Traffic Incident Management train-the-trainer course, the course's revised and finalized curriculum, and an evaluation of its effectiveness. For more information on traffic incident responder training, contact ...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L17-RW-1: A Framework for Improving Travel Time Reliability describes the results of a project designed to identify and enhance the dissemination of transportation systems management and operations (TSM&O) information. A major component of Reliability Project L17 was development of a Knowledge Transfer System (KTS), a web-based...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L14-RW-2: Lexicon for Conveying Travel Time Reliability Information includes a glossary of terms designed to convey travel time reliability information to travelers so that such information can be understood and used in a way that influences their travel choices, but does not present a safety hazard. Reliability Proj...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L14-RW-1: Effectiveness of Different Approaches to Disseminating Traveler Information on Travel Time Reliability provides recommendations on appropriate ways to introduce and provide travel time reliability information to travelers so that such information can be understood and used in a way that influences their travel c...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L12-RW-1: Training of Traffic Incident Responders presents the results of a project that developed a training program for traffic incident responders and managers. The training program described in the report contains two components: training of trainers and incident responder training. This report is available only in electronic f...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L13-RW-1: Requirements and Feasibility of a System for Archiving and Disseminating Data from SHRP 2 Reliability and Related Studies explores the feasibility of developing and populating an online archive for the great variety and volume of data being produced by the SHRP 2 Reliability focus area research program. The goal of the ar...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L11-RR-1: Evaluating Alternative Operations Strategies to Improve Travel Time Reliability identifies and evaluates strategies and tactics intended to satisfy users’ travel-time reliability requirements of roadways. To that end, the report presents a set of options regarding technological changes, operational solutions, and org...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L10-RR-1: Feasibility of Using In-Vehicle Video Data to Explore How to Modify Driver Behavior That Causes Nonrecurring Congestion presents findings on the feasibility of using existing in-vehicle data sets, collected in naturalistic driving settings, to make inferences about the relationship between observed driver behavior and non...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L08-RW-1: Incorporation of Travel Time Reliability into the Highway Capacity Manual presents a summary of the work conducted during the development of two proposed new chapters for the Highway Capacity Manual 2010 (HCM2010). These chapters demonstrated how to apply travel time reliability methods to the analysis of freeways an...

TRB’s second Strategic Highway Research Program (SHRP 2) Reliability Project L08 has released two proposed chapters, numbers 36 and 37, for TRB’s Highway Capacity Manual 2010 (HCM2010) that introduce the concept of travel time reliability and offer new analytic methods. The prospective Chapter 36 for the HCM2010 concerns freeway facilities and urban streets and the prospective supplemental Chapter...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L07-RR-3: Further Development of the Safety and Congestion Relationship for Urban Freeways explores the relationship between safety and congestion and tests the relationship among various nonrecurrent congestion scenarios.

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L07-RR-2: Design Guide for Addressing Nonrecurrent Congestion catalogs highway design treatments that can be used to reduce nonrecurrent congestion and improve the reliability of urban and rural freeways. The draft design guide is accompanied by a report titled Identification and Evaluation of the Cost-Effectiveness of Highway Desi...

TRB’s second Strategic Highway Research Program (SHRP 2) S2-L07-RR-1: Identification and Evaluation of the Cost-Effectiveness of Highway Design Features to Reduce Nonrecurrent Congestion focuses on geometric design treatments that can be used to reduce delays due to nonrecurrent congestion. The report provides a method for incorporating the economic savings due to delay reduction and economic...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L06-RR-2: Guide to Improving Capability for Systems Operations and Management examines the way transportation agencies should be organized to successfully execute operations programs that improve travel time reliability. After the guide was submitted for publication, the American Association of State Highway and Transportation Offi...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L06-RR-1: Institutional Architectures to Improve Systems Operations and Management examines a large number of topics concerning organizational and institutional approaches that might help transportation agencies enhance highway operations and travel time reliability. The same project that produced SHRP 2 Report S2-L06-RR-1 also pro...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L05-RW-1: Incorporating Reliability Performance Measures into the Transportation Planning and Programming Processes reviews domestic and international literature describing current research and practical use of travel-time reliability in transportation planning; summarizes results from a survey of state departments of transportatio...

TRB’s second Strategic Highway Research Program (SHRP 2) S2-L05-RR-3: Incorporating Reliability Performance Measures into the Transportation Planning and Programming Processes: Technical Reference provides a “how-to” guide for technical staff to select and calculate the appropriate performance measures to support the development of key planning products, including long-range transportation pl...

TRB’s second Strategic Highway Research Program (SHRP 2) Reliability Project S2-L05-RR-2: Guide to Incorporating Reliability Performance Measures into the Transportation Planning and Programming Processes is designed to help planning, programming, and operations managers to apply the concept of travel-time reliability to balance investment in programs and projects. The Guide is designed to accompa...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L04-RW-2: Incorporating Reliability Performance Measures into Operations and Planning Modeling Tools: Application Guidelines provides an overview of the methodology and tools that can be applied to existing microsimulation and mesoscopic modeling software in order to assess travel time reliability. SHRP 2 Reliability Project L04 al...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L04-RR-1: Incorporating Reliability Performance Measures into Operations and Planning Modeling Tools explores the underlying conceptual foundations of travel modeling and traffic simulation and provides practical means of generating realistic reliability performance measures using network simulation models. SHRP 2 Reliability ...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L03-RR-1: Analytical Procedures for Determining the Impacts of Reliability Mitigation Strategies explores predictive relationships between highway improvements and travel time reliability. For example, how can the effect of an improvement on reliability be predicted; and alternatively, how can reliability be characterized as a func...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L02-RR-2: Guide to Establishing Monitoring Programs for Travel Time Reliability describes how to develop and use a Travel Time Reliability Monitoring System (TTRMS). The guide also explains why such a system is useful, how it helps agencies do a better job of managing network performance, and what a traffic management center (...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L02-RR-1: Establishing Monitoring Programs for Travel Time Reliability describes what reliability is and how it can be measured and analyzed. SHRP Reliability Project L02 has also produced Guide to Establishing Monitoring Programs for Travel Time Reliability that describes how to develop and use a Travel Time Reliability Monit...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L01-RR-2: Guide to Integrating Business Processes to Improve Travel Time Reliability explores various ways that transportation agencies could reengineer their day-to-day business practices to enhance traffic operations, address nonrecurring traffic congestion, and improve the reliability of travel times delivered to roadway system ...

TRB’s second Strategic Highway Research Program (SHRP 2) Report: S2-L01-RR-1: Integrating Business Processes to Improve Travel Time Reliability addresses various ways that transportation agencies can reengineer their day-to-day business practices to help improve traffic operations, address nonrecurring traffic congestion, and improve the reliability of travel times delivered to roadway system user...

TRB’s second Strategic Highway Research Program (SHRP 2) Innovations Deserving Exploratory Analysis (IDEA) Final Report for SHRP 2 Reliability IDEA Project L-15C: Online Traffic Simulation Service for Highway Incident Management describes Relteq Harmony, a decision support system that transportation network operators may use to help determine possible responses to traffic events. The system is des...

TRB’s second Strategic Highway Research Program (SHRP 2) Innovations Deserving Exploratory Analysis (IDEA) Final Report for SHRP 2 Reliability IDEA Project L-15A: Forecasting and Delivery of Highway Travel Time Reliability Information assesses the feasibility of employing predictive algorithms driven by historical and real-time traffic data to provide pre-trip, time-dependent travel time informati...

TRB’s second Strategic Highway Research Program (SHRP 2) Reliability Project L38 has released a prepublication, non-edited version of a report that tested SHRP 2's reliability analytical products at a Southern California pilot site. The Southern California site focused on two freeway facilities: I-210 in Los Angeles County and I-5 in Orange County. The pilot testing demonstrates&nbs...

TRB’s second Strategic Highway Research Program (SHRP 2) Reliability Project L38 has released a prepublication, non-edited version of a report that tested SHRP 2's reliability analytical products at a Florida pilot site. The Florida site focused on the Florida Department of Transportation's Transportation System Management and Operations program activities and traffic management cen...

TRB’s second Strategic Highway Research Program (SHRP 2) Innovations Deserving Exploratory Analysis (IDEA) Program Final Report for SHRP 2 Reliability IDEA Project L-15B: Proximity Information Resources for Special Events describes development of a mobile application to assist in management and communications during large events. A video is available  that showcases a demonstration of the Pro...

TRB’s Strategic Highway Research Program (SHRP 2) has released a guide to a PowerPoint presentation that highlights the potential benefits of mainstreaming operations as a core mission and business practice of state departments of transportation (DOTs). The intended audiences for the presentation are chief executive officers (CEOs) and senior managers at DOTs.  The PowerPoint presentation is ...

TRB’s second Strategic Highway Research Program (SHRP 2) Reliability Project L04 report titled Incorporating Reliability Performance Measures into Operations and Planning Modeling Tools: Reference Material that discusses the activities required to develop operational models to address the needs of the L04 research project. This report also discusses the underlying methodologies of the simulation t...

TRB’s second Strategic Highway Research Program (SHRP 2) Reliability Project L38 Report: Pilot Testing of SHRP 2 Reliability Data and Analytical Products: Minnesota tests SHRP 2's Reliability analytical products at a Minnesota pilot site for SHRP 2 Reliability products for the  L02 , L07 , and L05  projects. These data elements were combined into a travel time reliability monit...

TRB’s second Strategic Highway Research Program (SHRP 2) Report: Handbook for Communicating Travel Time Reliability Through Graphics and Tables offers ideas on how to communicate reliability information in graphical and tabular form. SHRP 2 Reliability Project L02 has also released Establishing Monitoring Programs for Travel Time Reliability , which describes what reliability is and how it ca...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L32C-RW-1: Post-Course Assessment and Reporting Tool for Trainers and TIM Responders Using the SHRP 2 Interdisciplinary Traffic Incident Management Curriculum documents the development of a tool to assess the effectiveness of a multidisciplinary, multiagency training curriculum for traffic incident management.

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L13A-RW-1: Designing the Archive for SHRP 2 Reliability and Reliability-Related Data explores the development, testing, and deployment of the SHRP 2 Reliability Archive system. This archive is a repository that stores the data and information from SHRP 2 Reliability and Reliability-related projects. This project also produced ...

TRB’s second Strategic Highway Research Program (SHRP 2) Report S2-L33-RW-1: Validation of Urban Freeway Models documents and presents the results of a project to investigate, validate, and enhance the travel time reliability models developed in the SHRP 2 L03 project titled Analytical Procedures for Determining the Impacts of Reliability Mitigation Strategies. This report explores the use of new ...

TRB’s second Strategic Highway Research Program (SHRP 2) Reliability Project L34 has released a prepublication, non-edited version of a report titled E-tool for Business Processes to Improve Travel Time Reliability that explores an e-tool to assist transportation agencies when evaluating their processes to improve travel time reliability. The report details the functional requirements, software ar...

TRB’s second Strategic Highway Research Program (SHRP 2) Reliability Project L07 has released a prepublication, non-edited version of an Analysis Tool for Design Treatments to Address Nonrecurrent Congestion: Annotated Graphical User’s Guide Version 1.0. The guide is intended to assist users of the Microsoft-based Excel analysis tool .  The analysis tool is designed to analyze the effect...