How Long to Read Methods of Safety Improvements at Coordinated Signals

How Long Does it Take to Read Methods of Safety Improvements at Coordinated Signals?

It takes the average reader 3 hours to read Methods of Safety Improvements at Coordinated Signals by Wei Li

Assuming a reading speed of 250 words per minute. Learn more

Description

In this research, the safety impact of arterial signal coordination is investigated. Based on the findings, procedures are proposed to incorporate safety considerations into signal coordination design. In addition, a software tool is developed to facilitate the use of the research findings. Signal coordination has been extensively employed as a tool to optimize an arterial system's mobility performance, commonly measured by the total number of vehicle stops and the time of delays. Although vehicle crashes at signalized intersections have long been recognized as a major safety threat, studies to date have been limited locally to non-coordinated signals or the noncoordinated features of signal timings. Disaggregate statistical models are developed to identify the influential crash likelihood factors of rear-end and right-angle crashes, the two most frequent types of intersection crashes. To capture the severity factors, the outcomes are further classified into property-damage-only (PDO) and injury-fatal (IF) crashes. The crash likelihoods for each 15-minute interval are used as the response variables of the models. For each 15-minute interval, predictive variables are collected or derived from available data, including the volume, signal timings, and traffic patterns. A traffic pattern characterization is designed to represent each 15-minute interval's arrival pattern. The key findings are as follows: First, signal coordination significantly affects crash likelihood. Certain traffic arrival patterns are associated with significantly lower crash likelihoods. Second, the dilemma zone contributes in a limited way to the crash likelihoods. Third, adjusted volumes, based on the presented models, were found to be better predictors of crash likelihoods, which indicates that only a portion of all vehicles are highly susceptible to crashes. Fourth, shorter distances from upstream intersection and shorter cycle lengths are associated with lower risk levels of crashes.

How long is Methods of Safety Improvements at Coordinated Signals?

Methods of Safety Improvements at Coordinated Signals by Wei Li is 176 pages long, and a total of 45,056 words.

This makes it 59% the length of the average book. It also has 55% more words than the average book.

How Long Does it Take to Read Methods of Safety Improvements at Coordinated Signals Aloud?

The average oral reading speed is 183 words per minute. This means it takes 4 hours and 6 minutes to read Methods of Safety Improvements at Coordinated Signals aloud.

What Reading Level is Methods of Safety Improvements at Coordinated Signals?

Methods of Safety Improvements at Coordinated Signals is suitable for students ages 10 and up.

Note that there may be other factors that effect this rating besides length that are not factored in on this page. This may include things like complex language or sensitive topics not suitable for students of certain ages.

When deciding what to show young students always use your best judgement and consult a professional.

Where Can I Buy Methods of Safety Improvements at Coordinated Signals?

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