|
Roadside Hardware Replacement Analysis: User Guide
2/11/2021 1:53:07 PM
Highway agencies can use a method to assess roadside hardware and establish priorities on how upgrades of hardware should occur for individual projects or establish policy guidelines on roadside hardware assessments. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 292: Roadside Hardware Replacement Analysis: User Guide presents how to implement and plan for assessing roadside hardware. Supplemental to the document are an Assessment Worksheet and Project Summary Slides .
Developing a Guide for Quantitative Approaches to Systemic Safety Analysis
12/14/2020 12:22:20 PM
Highway agencies have traditionally managed the safety improvement process by identifying and correcting high-crash locations (“hot-spots”), where concentrations of crashes and, often, patterns of crashes of similar types, were found. However, when crashes are evaluated over too short a period of time (3 years or less), locations may be identified as hot-spots simply due to the random nature of where crashes occur. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 285: Devel...
Framework for Managing Data from Emerging Transportation Technologies to Support Decision-Making
10/21/2020 11:59:14 AM
The amount of data surrounding the application of emerging technologies is expanding, producing “big data” at magnitudes not previously seen. While a few agencies have found some success with individual projects, most are uncertain on how to handle this level of big data at an organizational level. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 282: Framework for Managing Data from Emerging Transportation Technologies to Support Decision-Making is designed to walk an agen...
Highway Capacity Manual Methodologies for Corridors Involving Freeways and Surface Streets
10/19/2020 4:03:50 PM
The procedures detailed in the 6th Edition of the Highway Capacity Manual (HCM) estimate capacity and several operational measures, including those determining Level of Service, for freeway facilities as well as surface streets. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 290: Highway Capacity Manual Methodologies for Corridors Involving Freeways and Surface Streets introduces materials to help modify the freeway analysis methods and the urban street methods so that th...
Business Models to Facilitate Deployment of Connected Vehicle Infrastructure to Support Automated Vehicle Operations
9/28/2020 11:53:11 AM
State Departments of Transportation (DOTs) and other government agencies recognize the value of connected vehicle (CV) technologies in helping achieve the strategic objectives of saving lives and relieving congestion. Several agencies are currently planning and preparing for a future where CV technologies could become a part of their routine business operations. A core consideration in any such planning effort is an assessment of the need for and the nature of public CV infrastructure investments to supp...
Evaluating Strategies for Work Zone Transportation Management Plans
9/18/2020 11:58:59 AM
Transportation management plans (TMPs) are a set of coordinated strategies designed to help agencies achieve work zone project goals related to traffic mobility, efficient system operation, motorist and worker safety, and other operational targets. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 276: Evaluating Strategies for Work Zone Transportation Management Plans focuses on the field evaluations that are part of NCHRP Research Report 945: Strategies for Work Zone Trans...
Standard Definitions for Common Types of Pavement Cracking
9/16/2020 11:55:55 AM
New definitions will help pavement cracking survey providers and pavement engineers at state highway administrations conduct objective cracking measurements and encourage continuing technological innovations by researchers and vendors. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 288: Standard Definitions for Common Types of Pavement Cracking helps develop standard, discrete definitions for common cracking types for asphalt and concrete pavements. The standard definitio...
White Papers for Right-Sizing Transportation Investments
9/4/2020 11:50:06 AM
While not all right-sizing projects involve a change in jurisdictional responsibility and ownership, jurisdictional transfer can be a key tool for implementing right-sizing plans and agreements. As a supplemental document to NCHRP Research Report 917: Right-Sizing Transportation Investments:A Guidebook for Planning and Programming , the TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 263: White Papers for Right-Sizing Transportation Investments offers practical examples of the...
Planning and Implementing Multimodal, Integrated Corridor Management: Guidebook
8/18/2020 5:10:30 AM
Integrated Corridor Management (ICM) is an operational concept that seeks to reduce congestion and improve performance by maximizing the use of available multimodal capacity across a corridor, including highways, arterial roads, and transit systems. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 287: Planning and Implementing Multimodal, Integrated Corridor Management: Guidebook provides an overview of current recommended practices and outlines critical components for the...
Decision-Making Guide for Traffic Signal Phasing
8/17/2020 11:55:37 AM
Few resources provide information related to selecting the most appropriate traffic signal phasing for the various geometric and operational situations encountered in the field. This is especially true for left-turn signal phasing decisions with respect to the level of control for the left-turn movement and whether left turns should precede or follow the main through movement. The TRB National Cooperative Highway Research Program's NCHRP Web-Only Document 284: Decision-Making Guide for Traffic Signal Pha...
|
|