Author
Coffey, Sean and Seri Park
Benefit Summary HTML

Part-time shoulder use, or PTSU, is a capacity-increasing strategy in which the road shoulder is temporarily utilized during peak commuting periods. It sees sporadic application in the United States, predominantly for transit. As a dynamic lane management strategy that helps to address issues of limited land availability for permanent arterial expansions, it is likely to become increasingly relevant and effective as connected vehicles make more flexible management possible.

This paper consists of a literature review and a simulation-based implementation of PTSU along a stretch of I-476 in Philadelphia. Several different scenarios were tested to determine if limiting the PTSU lane to either passenger vehicles or heavy trucks would be more effective than simply being an additional general-use lane. While PTSU lanes are frequently bus-only, there are no transit routes along the selected segment.

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Lesson Background HTML

Part-time shoulder use, or PTSU, is a capacity-increasing strategy in which the road shoulder is temporarily utilized during peak commuting periods. It sees sporadic application in the United States, predominantly for transit. As a dynamic lane management strategy that helps to address issues of limited land availability for permanent arterial expansions, it is likely to become increasingly relevant and effective as connected vehicles make more flexible management possible.

This paper consists of a literature review and a simulation-based implementation of PTSU along a stretch of I-476 in Philadelphia. Several different scenarios were tested to determine if limiting the PTSU lane to either passenger vehicles or heavy trucks would be more effective than simply being an additional general-use lane. While PTSU lanes are frequently bus-only, there are no transit routes along the selected segment.

Because of its low prevalence, some of the intricacies of PTSU implementation are not fully understood. Though this report is a simulation rather than a pilot deployment, its authors used the results of their investigation to inform a set of recommendations to guide further research into how to best add PTSU along a route.

Other Reference Number
Volume 2018, Article ID 1724646
Pages
8
Priority Research Area
Publication Sort Date
Publisher
Advances in Civil Engineering
Result Type
Reviewer
Source ID
1923
Title
Operational Evaluation of Part-Time Shoulder Use for Interstate 476 in the State of Pennsylvania
UNID
A2BAFD4EA407D9EE8525835800725A57
Source Review
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