Can Carpooling Clear the Road and Clean the Air?

@article{Shewmake2012CanCC,
  title={Can Carpooling Clear the Road and Clean the Air?},
  author={Sharon Shewmake},
  journal={Journal of Planning Literature},
  year={2012},
  volume={27},
  pages={363 - 374}
}
  • Sharon Shewmake
  • Published 1 July 2012
  • Engineering
  • Journal of Planning Literature
Proponents of High Occupancy Vehicle (HOV) lanes claim the lanes reduce vehicle-trips by encouraging more people to carpool, but the evidence is mixed. This article reviews studies on the impacts of HOV lanes with a focus on behavioral models. This research makes a case for performance measures with direct welfare, congestion, or air pollution effects and focuses on papers that explicitly model carpool formation and allow for induced demand. Papers on individual regions find that HOV lanes may… Expand

Tables from this paper

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From 2005 to early 2007, California issued 85,000 Clean Air stickers that allowed three models of hybrid cars to avoid congestion by driving on High Occupancy Vehicle (HOV or ‘carpool’) lanes with aExpand
Optimizing carpool formation along high-occupancy vehicle lanes
TLDR
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TLDR
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Partially limited access control design for special-use freeway lanes
TLDR
A new design is proposed where the continuous access is mostly designated along the freeway to achieve higher travel speed while buffers between the HOV lane(s) and the adjacent GP lanes are strategically placed on selected freeway segments to accommodate higher throughput on those segments. Expand
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TLDR
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Urban Arterial Road Optimization and Design Combined with HOV Carpooling under Connected Vehicle Environment
TLDR
Investigation of the effect of adopting two HOV schemes on the urban arterial road under connected vehicle environment showed that the reversible HOV carpooling scheme could not only mitigate the traffic congestion caused by traffic tidal phenomenon but also improve the average speed and traffic volume of theurban arterialRoad segment. Expand
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References

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Carpooling and congestion pricing: HOV and HOT lanes
It is often argued in the US that HOV (high occupancy vehicle) lanes are wasteful and should be converted to HOT (high occupancy vehicles and toll lanes). In this paper, we construct a simple modelExpand
When should carpool lanes be introduced in a multi-lane highway ?
High-occupancy-vehicle (HOV) lanes are often suggested as a cost-effective alternative to address growing traffic congestion problems by providing priority treatment for buses and carpools. As aExpand
RE-THINKING HOV - HIGH OCCUPANCY VEHICLE FACILITIES AND THE PUBLIC INTEREST
This paper reviews the history of the high occupancy vehicle (HOV) concept and explores the assumptions underlying the expansion of HOV facilities. Some in highway and transit agencies argue that theExpand
To What Extent Can High-Occupancy Vehicle Lanes Reduce Vehicle Trips and Congestion?
Despite the increasing interest in and deployment of managed lanes on highways that involve pricing and tolling schemes, a considerable number of highway facilities still use high-occupancy vehicleExpand
Carpooling and congestion pricing in a multilane highway with high-occupancy-vehicle lanes
TLDR
In the case where toll differentiation cannot be applied, the optimal uniform toll for the second-best solution in the presence of HOV lanes should be set to be a weighted average of the marginal external congestion costs between non-carpooling and carpooling commuters. Expand
Differentiated Road Pricing, Express Lanes and Carpools: Exploiting Heterogeneous Preferences in Policy Design
In the face of rising congestion on the nation's road system, policymakers have explored ways to reduce travel delays. One approach has been to allocate reserved lanes - called high-occupancy-vehicleExpand
Hybrid Cars and HOV Lanes
From 2005 to early 2007, California issued 85,000 Clean Air stickers that allowed three models of hybrid cars to avoid congestion by driving on High Occupancy Vehicle (HOV or ‘carpool’) lanes with aExpand
Effects of high occupancy vehicle lanes on freeway congestion
Previous research on the effect of HOV (high occupancy vehicle) lanes on bottleneck flows is extended here to entire freeways using both theory and empirical evidence. The paper shows that if theExpand
Carpool lanes - an idea whose time has come and gone
Evidence is growing that high occupancy vehicle (HOV) lanes have not changed Americans' driving habits. The number of commuters carpooling to work is declining. The Washington, D.C., metropolitanExpand
The merits of separating cars and trucks
TLDR
This paper investigates the potential benefits from separating cars and trucks onto different lanes or routes while treating road infrastructure as given, and finds that creating a toll lane for one vehicle type is generally more effective. Expand
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