Commercial Heavy Vehicle Impacts On Signalized Arterial Corridor Performance
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Commercial Heavy Vehicle Impacts On Signalized Arterial Corridor Performance
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Author :
language : en
Publisher:
Release Date : 2019
Commercial Heavy Vehicle Impacts On Signalized Arterial Corridor Performance written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2019 with Heavy vehicle simulators categories.
University of South Florida researchers used microsimulation to model the acceleration and deceleration of heavy vehicles and more accurately predict their impact on traffic flows.
A Simulation Based Approach To Evaluate Safety Impacts Of Increased Traffic Signal Density
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Author : Kenneth P. Drummond
language : en
Publisher:
Release Date : 2002
A Simulation Based Approach To Evaluate Safety Impacts Of Increased Traffic Signal Density written by Kenneth P. Drummond and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with Roads categories.
One of the most controversial access management techniques practitioners face is also one of the most common: restricting signal density. Increased signal density can improve access for minor approaches to a corridor; however, it can also increase delays and rear-end crashes for vehicles on the mainline (major) approach. An ability to evaluate the impacts of increased signal spacing is thus critical for decision makers. Because crash data are not always easy to obtain, a logical question arises: Can simulation models be used to evaluate the safety impacts of increased traffic signal density? This report describes a method for using simulation models to evaluate the safety impacts of increased traffic signal density in suburban corridors. Using 10 years of data from two major arterials in Virginia, actual crash rates were compared with operational performance measures simulated by the Synchro/SimTraffic model. As expected, crash rates were positively correlated with stops per vehicle and delay per vehicle and negatively correlated with mainline speed. Three findings were significant. First, the correlation between crash rates and select mainline performance measures (delay, speed, and stops) was relatively strong despite the inherent variability in crash rates: R2, a measure of explained variance in crash rates, yielded values from 0.54 to 0.89. Second, three distinct regimes relate stops per vehicle to signal density: the installation of the first few signals causes a drastic increase in stops, the addition of the next set of signals causes a moderate increase in stops, and the addition of a third set of signals does not significantly affect the number of stops per vehicle. Third, multiple regime models also relate delay per vehicle to signal density. This study recommends two practical applications. To the extent these mainline performance measures correlate with crashes, simulation modeling may be used to estimate safety impacts of increased signals, which is appealing because simulation packages are becoming easier to apply. Further, three regime models can suggest when, in the timeline of corridor development, the addition of a traffic signal is likely to degrade corridor performance significantly versus when it will have little effect, thereby allowing decision makers to expend political capital when it is most beneficial (e.g., the occasions when there is significant degradation of corridor performance). Most important, the approach herein suggests a long-range corridor-planning tool for evaluating the impacts of different access densities.
The Impact Of Heavy Vehicles On Residents On Arterial Roads And State Highways
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Author :
language : en
Publisher:
Release Date : 2002
The Impact Of Heavy Vehicles On Residents On Arterial Roads And State Highways written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2002 with categories.
Traffic Signal Preemption For Emergency Vehicles
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Author :
language : en
Publisher:
Release Date : 2006
Traffic Signal Preemption For Emergency Vehicles written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with Electronic traffic controls categories.
Evaluation Of Emergency Vehicle Signal Preemption On The Route 7 Virginia Corridor
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Author : Darcy Bullock
language : en
Publisher:
Release Date : 1999
Evaluation Of Emergency Vehicle Signal Preemption On The Route 7 Virginia Corridor written by Darcy Bullock and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 1999 with Electronic traffic controls categories.
Traffic Congestion
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Author : Alberto Bull
language : en
Publisher: Santiago, Chile : United Nations, Economic Commission for Latin America and the Caribbean
Release Date : 2003
Traffic Congestion written by Alberto Bull and has been published by Santiago, Chile : United Nations, Economic Commission for Latin America and the Caribbean this book supported file pdf, txt, epub, kindle and other format this book has been release on 2003 with Technology & Engineering categories.
Assessment Of Fuel Economy Technologies For Light Duty Vehicles
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Author : National Research Council
language : en
Publisher: National Academies Press
Release Date : 2011-06-03
Assessment Of Fuel Economy Technologies For Light Duty Vehicles written by National Research Council and has been published by National Academies Press this book supported file pdf, txt, epub, kindle and other format this book has been release on 2011-06-03 with Science categories.
Various combinations of commercially available technologies could greatly reduce fuel consumption in passenger cars, sport-utility vehicles, minivans, and other light-duty vehicles without compromising vehicle performance or safety. Assessment of Technologies for Improving Light Duty Vehicle Fuel Economy estimates the potential fuel savings and costs to consumers of available technology combinations for three types of engines: spark-ignition gasoline, compression-ignition diesel, and hybrid. According to its estimates, adopting the full combination of improved technologies in medium and large cars and pickup trucks with spark-ignition engines could reduce fuel consumption by 29 percent at an additional cost of $2,200 to the consumer. Replacing spark-ignition engines with diesel engines and components would yield fuel savings of about 37 percent at an added cost of approximately $5,900 per vehicle, and replacing spark-ignition engines with hybrid engines and components would reduce fuel consumption by 43 percent at an increase of $6,000 per vehicle. The book focuses on fuel consumption-the amount of fuel consumed in a given driving distance-because energy savings are directly related to the amount of fuel used. In contrast, fuel economy measures how far a vehicle will travel with a gallon of fuel. Because fuel consumption data indicate money saved on fuel purchases and reductions in carbon dioxide emissions, the book finds that vehicle stickers should provide consumers with fuel consumption data in addition to fuel economy information.
Signal Timing Manual
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Author : Thomas Urbanik
language : en
Publisher:
Release Date : 2015
Signal Timing Manual written by Thomas Urbanik and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2015 with Electronic traffic controls categories.
"TRB's National Cooperative Highway Research Program (NCHRP) Report 812: Signal Timing Manual - Second Edition, covers fundamentals and advanced concepts related to signal timing. The report addresses ways to develop a signal timing program based on the operating environment, users, user priorities by movement, and local operational objectives. Advanced concepts covered in the report include the systems engineering process, adaptive signal control, preferential vehicle treatments, and timing strategies for over-saturated conditions, special events, and inclement weather. An overview PowerPoint presentation accompanies the report." --
Stillwater Business Park Shastec Redevelopment Project Area Airport Land Use Plan Amendment
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Author :
language : en
Publisher:
Release Date : 2006
Stillwater Business Park Shastec Redevelopment Project Area Airport Land Use Plan Amendment written by and has been published by this book supported file pdf, txt, epub, kindle and other format this book has been release on 2006 with categories.
Recent Advances In Traffic Engineering
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Author : Shriniwas S. Arkatkar
language : en
Publisher: Springer Nature
Release Date : 2020-08-28
Recent Advances In Traffic Engineering written by Shriniwas S. Arkatkar and has been published by Springer Nature this book supported file pdf, txt, epub, kindle and other format this book has been release on 2020-08-28 with Technology & Engineering categories.
This book comprises select proceedings of the National Conference on Recent Advances in Traffic Engineering (RATE 2018) with technical papers on the themes of traffic operation control and management, traffic safety and vulnerable road users, and sustainable transportation. It covers a wide range of topics, including advanced traffic data collection methods, big data analysis, mix-traffic characterization and modelling, travel time reliability, scenario of pedestrian and non-motorised vehicles (NMVs) traffic, regional traffic growth modelling, and applications of intelligent transportation systems (ITS) in traffic management. The contents of this book offer up-to-date and practical knowledge on different aspects of traffic engineering, which is useful for students, researchers as well as practitioners.