Effect of Road Construction Projects on Travel Time Reliability

Kukkapalli, Venu Madhav; Pulugurtha, Srinivas S.

doi:10.1061/9780784481547.005

Cited by 3 publications

(2 citation statements)

References 14 publications

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“…Even though the analysis was done at a very small spatial granularity, it was limited to travel-time-based measures (average travel time, planning time, buffer time, and buffer time index) and did not include any volume considerations. The study found that project type, day of week, and time of day were influencers on how measures change between the before, during, and after periods ( 10 ).…”

Section: Literature Reviewmentioning

confidence: 99%

Measuring Congestion and Reliability Impacts of Safety Projects

Babiceanu

Lahiri

Lockwood

2021

Transportation Research Record: Journal of the Transportation R

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This study uses a suite of performance measures that was developed by taking into consideration various aspects of congestion and reliability, to assess impacts of safety projects on congestion. Safety projects are necessary to help move Virginia’s roadways toward safer operation, but can contribute to congestion and unreliability during execution, and can affect operations after execution. However, safety projects are assessed primarily for safety improvements, not for congestion. This study identifies an appropriate suite of measures, and quantifies and compares the congestion and reliability impacts of safety projects on roadways for the periods before, during, and after project execution. The paper presents the performance measures, examines their sensitivity based on operating conditions, defines thresholds for congestion and reliability, and demonstrates the measures using a set of Virginia safety projects. The data set consists of 10 projects totalling 92 mi and more than 1M data points. The study found that, overall, safety projects tended to have a positive impact on congestion and reliability after completion, and the congestion variability measures were sensitive to the threshold of reliability. The study concludes with practical recommendations for primary measures that may be used to measure overall impacts of safety projects: percent vehicle miles traveled (VMT) reliable with a customized threshold for Virginia; percent VMT delayed; and time to travel 10 mi. However, caution should be used when applying the results directly to other situations, because of the limited number of projects used in the study.

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Section: Literature Reviewmentioning

confidence: 99%

Measuring Congestion and Reliability Impacts of Safety Projects

Babiceanu

Lahiri

Lockwood

2021

Transportation Research Record: Journal of the Transportation R

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“…Kwon et al (2011) proposed an empirical, corridor-level method to divide the travel time unreliability or variability over a freeway section into incidents, weather, work zones, special events, and inadequate base capacity or bottlenecks for developing effective strategies to mitigate congestion. Yesantarao and Pulugurtha (2017) and Kukkapalli and Pulugurtha (2018) examined the travel time and travel time variations before, during, and after the completion of selected road construction projects by computing the ratios of travel time performance-based measures before, during and after the completion of selected road construction projects. The subject link, upstream link and downstream link characteristics were observed to have a significant effect on the link-level average travel times due to a road construction project (Kukkapalli & Pulugurtha, 2021).…”

Section: Introductionmentioning

confidence: 99%

Comparing travel time performance-based measures to assess the effect of a freeway road construction project on freeway and connecting arterial street links

Kukkapalli

Pulugurtha

2021

Urban, Planning and Transport Research

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A road construction project has a significant effect on traffic congestion and operational performance of the project corridor and connecting street links. However, not many researchers focused on travel time performance-based measures to assess the effect of a road construction project on the project corridor and connecting street links. Therefore, travel time data for a freeway road resurfacing project on 100 links within its vicinity were gathered and processed to assess the effect on freeway and connecting arterial street links. A paired t-test was used to examine the differences in means between the before and during road resurfacing project period travel time performance-based measures. There is a significant difference in travel time performance-based measures before and during the road resurfacing project period on freeway links and connecting arterial links. Their significance varied by the time-of-the-day and day-of-the-week on the freeway and connecting arterial links. The average travel time, planning time, and travel time index can consistently explain the effect of a road resurfacing (construction) project on transportation system performance when compared to buffer time and buffer time index. The findings can be used to enhance temporary traffic control practices in the vicinity of road construction projects.

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