Pilot Testing of SHRP 2 Reliability Data and Analytical Products: Washington (2014) / Chapter Skim
Currently Skimming:
Pages 5-12
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 5... ...
5 CHAPTER 1 Introduction 1.1 General Background One of the purposes of the second Strategic Highway Research Program (SHRP 2) is to improve the reliability of highway travel times by reducing the effects of nonrecurrent traffic events, including traffic incidents, work zones, demand fluctuations, special events, traffic control devices, weather, and inadequate base capacity.
|
From page 6... ...
6 tool to enable a wider range economic analysis. The tool uses separate sketch methods to predict the incident-induced delay and combines with the recurring delay to obtain mean travel time index (TTI)
|
From page 7... ...
7 Table 1.1. SHRP 2 L02 Reliability Product Summary Products 1.
|
From page 8... ...
8 1.2.2 SHRP 2 L05: Incorporating Reliability Performance Measures into the Transportation Planning and Programming Processes SHRP 2 L05 provides a concise description of how to incorporate reliability considerations into the transportation planning and programming process, with a focus on helping agencies make choices and tradeoffs about funding and project priority (Cambridge Systematics 2013)
|
From page 9... ...
9 1.2.3 SHRP 2 L07: Evaluation of the Costs and Effectiveness of Highway Design Features to Improve Travel Time Reliability The objective of SHRP 2 L07 is to evaluate the cost-effectiveness of geometric design treatments, such as alternating shoulders, emergency pull-offs, etc., in reducing nonrecurrent congestion (Potts et al.
|
From page 10... ...
10 Strength The tool can be used to measure the operational effectiveness as well as the economic benefit of design treatments for a freeway segment of interest. The tool allows highway agencies to compare the benefits and costs of implementing various nonrecurrent congestion treatments at specific locations.
|
From page 11... ...
11 1.2.4 SHRP 2 C11: Development of Improved Economic Analysis Tools Based on Recommendations from SHRP 2 L03 SHRP 2 C11 provides a sketch-level planning tool based on SHRP 2 L03 research that estimates the benefits of improving travel time reliability for use in benefit–cost analysis (Economic Development Research Group 2013)
|
From page 12... ...
12 Strength With minimal data input, the tool adds value by incorporating change in travel time reliability into project economic analyses. Weakness The calculation methodology is designed to capture the benefits of major capacity projects.
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.