Estimating the Safety Effects of Work Zone Characteristics and Countermeasures: A Guidebook (2018) / Chapter Skim
Currently Skimming:
Pages 1-4
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 1... ...
1 Work zones (WZs) are necessary to periodically maintain, rehabilitate, enhance, and reconstruct this nation's roadway network.
|
From page 2... ...
2 Estimating the Safety Effects of Work Zone Characteristics and Countermeasures: A Guidebook Figure 3. Work zones often create slowdowns and congestion by reducing the traffic-carrying capacity of the roadway.
|
From page 3... ...
Introduction 3 How to Estimate the Expected Effects of Work Zones on Crashes It would be beneficial for work zone designers and others to be able to predict the safety consequences of their proposed work zone design and management decisions prior to implementing them in the field. Examples of ways in which work zone crash estimates could be used include the following: • Quantify the safety-related benefits of completing the work faster, which could be used to help establish accelerated contract incentives that are in line with those expected safety benefits.
|
From page 4... ...
4 Estimating the Safety Effects of Work Zone Characteristics and Countermeasures: A Guidebook These approximations can be used in a number of ways -- for example, estimating the safety benefits that would be achieved by accelerating work zone completion times by a certain amount or in determining an "expected" work zone crash rate per month that could be compared with actual crashes as a performance measure to see if the work zone is having a bigger safety impact than was expected. Chapter 3 describes how trade-off analyses of the expected safety impacts of alternative work zone design features, operational strategies, and countermeasures can be performed.
|
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.