Travel time reliability with and without the dynamic use of hard shoulder: Field assessment from a French motorway

Bhouri, Neïla; Aron, Maurice; Scemama, G

doi:10.1016/j.jtte.2016.01.008

Cited by 15 publications

(13 citation statements)

References 5 publications

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“…The aim of this study is to evaluate the safety effect of HSR by applying the EB (empirical Bayes) methodology to crash data from South Korea collected before and after the HSR trials. More The authors' review of the literature suggests that the international evidence on HSR is mixed [9][10][11][12][18][19][20][22][23][24]. More importantly, conflicting results and views have yet to be reconciled [19,20,24].…”

Section: Objectives Of Studymentioning

confidence: 99%

“…More The authors' review of the literature suggests that the international evidence on HSR is mixed [9][10][11][12][18][19][20][22][23][24]. More importantly, conflicting results and views have yet to be reconciled [19,20,24]. "Practicing traffic engineers generally believe that decreased congestion resulting from hard shoulder running is associated with some unspecified degree of improved safety; yet, the majority opinion among researchers is that accident rates increase with an increase in the number of lanes, even if full shoulders are provided.…”

Section: Objectives Of Studymentioning

confidence: 99%

“…The increase in travel, whether for work or leisure, would contribute to the economy and improve the quality of life for users. [19,20,24]. "Practicing traffic engineers generally believe that decreased congestion resulting from hard shoulder running is associated with some unspecified degree of improved safety; yet, the majority opinion among researchers is that accident rates increase with an increase in the number of lanes, even if full shoulders are provided.…”

Section: Introductionmentioning

confidence: 99%

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Safety Effects of Freeway Hard Shoulder Running

et al. 2019

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Hard shoulder running (HSR) has been increasingly used as a sustainable and viable way to increase road capacity. This study investigated the safety effect of HSR on freeways in South Korea using the empirical Bayes method. This study found an increase in the total number of crashes. In terms of crash severity, a higher proportion of crashes (25.3%) on 2(3)-lane sections were found to be serious (involving injuries and/or fatalities) compared to those on 4(5)-lane sections (3.6%). Also, a positive relationship was found between the length of the hard shoulder running and changes in crash frequencies. Thus, hard shoulder running on lengthy 2(3)-lane freeways should be avoided.

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Section: Objectives Of Studymentioning

confidence: 99%

Section: Objectives Of Studymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Safety Effects of Freeway Hard Shoulder Running

et al. 2019

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“…In transport analysis, the term "reliability" usually means punctuality [13][14][15][16] but for the purpose of this analysis it has been redefined. Based on the number of passages, the number of passengers expected in the near future can be predicted.…”

Section: Journal Of Advanced Transportationmentioning

confidence: 99%

Challenges for Air Transport Providers in Czech Republic and Poland

Toruń

Burniak

Biały

et al. 2018

Journal of Advanced Transportation

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The aim of this paper is to find a trend in air transport behaviour in the Czech Republic and Poland, based on data collected between the years of 2004 and 2016. The choice of data period for the analysis was made because of the date when both mentioned countries joined the European Union and availability of data. The data used in this article is provided from the Eurostat web page where many revealing statistics are collected. The correlations of indicators were chosen as a method of the analysis. It was observed that the number of passengers increased up to 30% and 460%, respectively, in the Czech Republic and in Poland. The authors will explain possible reasons and aspects of such behaviour in order to make some predictions for future trends in air transport. The additional aim is to understand transport processes and economic growth in neighbouring countries during the period of focus. The knowledge of conditional changes in the number of passengers utilizing air transport grants the ability to make forecasts about the needed infrastructure, number of aircrafts, pilots, and staff needed at the airports.

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“…An evaluation of PTSU in the state of Washington found that the travel time reduced from nine minutes to one and a half minutes for a 2.49-kilometer segment of PTSU [2]. A United Kingdom study for the M42 motorway found that the variability of the travel time decreased by 27 to 34%, and a France-based study found an over improvement in travel time reliability [19,20]. Congestion was found to reduce by up to 35% in a German study and congestion frequency to reduce by up to 82% [21,22].…”

Section: Literature Reviewmentioning

confidence: 99%

Operational Evaluation of Part-Time Shoulder Use for Interstate 476 in the State of Pennsylvania

Coffey

Park

2018

Advances in Civil Engineering

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Part-time shoulder use (PTSU) is a capacity-adding strategy that utilized the shoulder temporarily during the peak commuting period and is used sporadically throughout the United States of America (USA). This strategy aids in addressing a transportation-related issue for major metropolitan areas. Around major metropolitan areas, the land availability is limited due to high population counts, which makes widening roadways for growing populations complex and expensive. Many countries are looking at methods that better utilize the transportation infrastructure currently constructed before widening the roadway. PTSU provides a possible solution to this problem, and this research aims to evaluate the operational benefits of PTSU using a case study based in the state of Pennsylvania. Interstate 476 (I-476), in the Philadelphia, Pennsylvania, metropolitan area is a prime candidate for PTSU. This four-lane highway has peak directional volumes of around 4,700 vehicles per hour in particular sections during the morning commuting period. I-476 is a major commuting route for the region, and the additional capacity during the commuting periods would greatly improve the flow of the surrounding network. This analysis was completed using a Vissim model simulating the 7 AM to 9 AM commuting period. A variety of PTSU scenarios were analyzed including (1) general purpose PTSU lane, (2) passenger cars only PTSU lane, (3) heavy trucks only PTSU lane, and (4) general purpose PTSU lane where additional traffic is induced. Overall, this study determined that PTSU could significantly decrease the travel time on I-476, regardless of vehicle type restrictions, and could provide a more stable traffic density throughout the I-476 network. This research provides additional insight into the effects of vehicle type restrictions on the effectiveness of PTSU and further strengthens the understanding of the operational benefit of PTSU.

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Travel time reliability with and without the dynamic use of hard shoulder: Field assessment from a French motorway

Cited by 15 publications

References 5 publications

Safety Effects of Freeway Hard Shoulder Running

Safety Effects of Freeway Hard Shoulder Running

Challenges for Air Transport Providers in Czech Republic and Poland

Operational Evaluation of Part-Time Shoulder Use for Interstate 476 in the State of Pennsylvania

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