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1 Challenge the future Master-Thesis presentation by ir. R.M. Beentjes Performance of rush-hour lanes and pluslanes A study to behavioral factors and design factors
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2 Challenge the future About me... Graduated november 1st 2012 Master Transport & Planning ITS Edulab Cooperation between Rijkswaterstaat and TU Delft Nice combination between company and university Supervision from both parties Currently working for Witteveen+Bos as project-engineer
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3 Challenge the future Contents Introduction Definitions Background Performance-indicators Ex-post evaluation Experimental setup Results Driving simulator study Experimental setup Results Conclusions and recommendations Future research
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4 Challenge the future Introduction
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5 Challenge the future Definition - rush-hour lane A hard shoulder on the right side of a road section that can be opened for traffic when intensities are high.
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6 Challenge the future Definition - pluslane A lane on the left side of a road section that can be opened for traffic when intensities are high. The hard shoulder can be retained, as all other lanes will become narrower.
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7 Challenge the future First rush-hour lane in 1996 First pluslane in 1999 Extra capacity without addition of an extra lane ± 174 km rush-hour lanes (7%) in the Netherlands ± 116 km pluslanes (5%) in the Netherlands No research compares different designs of rush-hour lanes and pluslanes No research focuses on influence of behavioral factors Background
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8 Challenge the future Performance-indicators Lane-flow distribution – regular highway
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9 Challenge the future Performance indicators Lane-flow distribution – rush-hour lane
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10 Challenge the future Performance-indicators Intensity-speed relation
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11 Challenge the future Ex-post evaluation
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12 Challenge the future Experimental setup Preliminary research Inquiry of all existing rush-hour lanes and pluslanes in the Netherlands Suitable sections for this research were filtered Data is collected and filtered using MATLAB
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13 Challenge the future Experimental setup Preliminary research Chosen rush-hour lanes (5): Chosen pluslanes (5): LocationLanes Lane width Speed limit (closed/open) A1 – Hoevelaken - Barneveld2+13,35|3,50|3,50120 / 100 A2 – Kerensheide - Vonderen2+13,25|3,40|3,28120 / 100 A2 – Vonderen - Urmond2+13,25|3,40|3,35120 / 100 A13 – Berkel & Rodenrijs - Delft- Zuid3+13,25|3,40|3,40|3,35100 / 100 A50 – Ewijk - Valburg2+13,50|3,50|3,50120 / 120 LocationLanes Lane width Speed limit (closed/open) A1 – Beekbergen – Deventer-Oost2+13,10|3,50|3,45120 / 100 A12 – Ede - Veenendaal2+13,00|3,50|3,35120 / 100 A12 – Woerden - Gouda3+12,75|3,50|3,50|3,50120 / 100 A12 – Zoetermeer - Gouwe2+12,75|3,50|3,25100 / 100 A27 – Gorinchem -Noordeloos2+12,70|3,00|3,25100 / 80
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14 Challenge the future Experimental setup Several comparisons Rush-hour lane vs. regular right lane Pluslane vs. regular left lane Different locations on rush-hour lanes and pluslanes Influence of design factors
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15 Challenge the future Results Design factors Lane widths Speed limits Total number of lanes in section (3 or 4) 5 rush-hour lane sections and 5 pluslane sections analyzed Pairwise comparison Influence on occupation and on free speeds driven
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16 Challenge the future Results Rush-hour lanes - occupation Influence of speed limit: 100 km/h – 120 km/h
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17 Challenge the future Results Pluslanes - occupation High speed limit + narrow lane
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18 Challenge the future Driving simulator study
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19 Challenge the future Experimental setup A50 between junction Ewijk and junction Valburg Wide rush-hour lane (3,50 m) Permanent 120 km/h speed limit 3 Lanes total (2+1) Designed and programmed into simulator Results in 2 parts: Car-following behavior Changes is the design
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20 Challenge the future Results Part 1: Car-following behavior Followers and leaders
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21 Challenge the future Results ± 95 km/h Desired speed: ± 120 km/h Part 1: Car-following behavior Followers and leaders
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22 Challenge the future Results Lane change when there is enough space on the rush-hour lane
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23 Challenge the future Results Speed difference is equal, car-following distance decreases linearly
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24 Challenge the future Results Lane change when smallest desired car-following distance is reached
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25 Challenge the future Results Part 2: Changes in the design Influence of signaling system (reduced signaling) Influence of broken markings (instead of continuous) Influence on occupation analyzed
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26 Challenge the future Results Part 2: Changes in the design Determining the occupation per lane Left lane Middle lane Rush-hour lane
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27 Challenge the future Results No differences at given conditions
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28 Challenge the future Conclusions and recommendations
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29 Challenge the future Rush-hour lanes: Lower speed limit than 120 km/h The incentive to change to the rush-hour lane at 120 km/h is very low Changes in markings and signaling do not have an influence on occupation at 120 km/h Pluslanes: Do not combine a high speed limit (100 km/h) with a narrow pluslane (< 2,80 m) Conclusions and recommendations
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30 Challenge the future Future research Extensive research to the influence of design factors Quantify influence per factor Possibly make an estimation of performance before the construction of a new managed lane New driving simulator study Option 1: improve the current study Option 2: use another driving simulator with better traffic models Test alternative designs with lower speeds
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31 Challenge the future Questions / discussion
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