Wireless Location Technology-Based Traffic Monitoring: Critical Assessment and Evaluation of an Early-Generation System

Smith, Brian L.; Zhang, Han; Fontaine, Michael D.; Green, Matthew W.

doi:10.1061/(asce)0733-947x(2004)130:5(576)

Cited by 37 publications

(22 citation statements)

References 3 publications

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“…However, real-time travel time estimation in some time intervals were failed owing to the problems of location accuracy or map matching [7]- [9], [20]. VDOT, MSHA and U.S. Wireless Corporation jointly carried out a pilot project of using cellular network for gathering traffic information in the southern suburban area of Washington from 2000 to 2001 [16] [21]. Location data of mobile probes in the project were collected on freeways, high-speed arterial roads and low traffic/low speed roads [16] [21].…”

Section: B Field Testsmentioning

confidence: 99%

Using Cellular Network for Inner-Suburban Freeway Traffic Monitoring

Yuan

Guan

2010

2010 International Conference on Logistics Engineering and Intelligent Transportation Systems

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With the increase in population and rapid urban sprawl in the major big cities in China, traffic monitoring in the inner-suburban areas is becoming an urgent problem to be solved. This paper proposes using cellular network for innersuburban freeway traffic monitoring. Backgrounds of cellular network and wireless location technologies are firstly introduced. Related works including simulation tests and field tests are reviewed. Opportunities and challenges of using cellular network for inner-suburban freeway traffic monitoring are finally discussed.

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Section: B Field Testsmentioning

confidence: 99%

Using Cellular Network for Inner-Suburban Freeway Traffic Monitoring

Yuan

Guan

2010

2010 International Conference on Logistics Engineering and Intelligent Transportation Systems

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“…Since cell phones regularly connect to their current base station and since the location of these base stations is known, information about the journey of the cell phone can be extracted from the service provider's database. By monitoring a large number of cell phones, and more in particular their hand-off processes when hopping from one base station to the next, an impression of the traffic speeds and the travel times can be obtained [109].…”

Section: Advanced Sensor Technologiesmentioning

confidence: 99%

Freeway Traffic Management and Control

Hegyi

Bellemans

Schutter

2009

Encyclopedia of Complexity and Systems Science

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“…The U.S. Wireless operational test included the UC Berkeley study by Yim and Cayford [6] which determined that estimates generally had a 60-meter accuracy, although 66% of all probe vehicle tracks had at least one data point that deviated from the caller's actual position by more that 200 meters. The Virginia Department of Transportation (VDOT) and Maryland State Highway Administration (MSHA) study [5] determined that only 4.2% of the intervals demonstrating significantly different mean speeds than the actual means for daytime periods. For nighttime periods, 27.3% of the speed estimates were different on the highway and 20.7% on major arterial streets.…”

Section: Research On Probe Technologiesmentioning

confidence: 99%

Comparative study on GPS and cellular probe techniques for freeway travel speed estimations

He¹,

Qiu²

2008

WIT Transactions on the Built Environment

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Traffic data, such as travel speed and travel time, is by nature stochastic. In order to deploy Intelligent Transportation Systems successfully, efficient, accurate, and sufficient collection of traffic data in a timely manner without interrupting the traffic flows is one of the imperative first steps. It is evident that travel speed estimates by gathering traffic data with moving vehicles is more representative of highway performance than the point estimates of speed from fixed detectors. Recently, GPS and cellular probe techniques have been researched and practiced in academic and industrial areas all around the world. The use of GPS and cellular probes for obtaining traffic data appears to be technically feasible. Still, there is little evidence to demonstrate that either system can be practically implemented. The comparative study conducted in this paper has integrated the possible real attributes of GPS and cellular probe systems, such as location accuracy, probe penetration rate and update frequency, into simulation on a real transportation network, and has developed methods for freeway travel speed estimation. The findings from simulation show that either of these two techniques has its own pros and cons. Cellular probe has wider probe penetration rate than GPS, which relieves the dependency on location accuracy, but the low update frequency reduces the coverage and accuracy of link travel speed estimation in the network. The GPS probe has a high update frequency, but the low probe penetration rate and the subsequent strong dependency on location accuracy are big obstacles to obtaining enough samples for link travel speed estimation. Thus, combining these two technologies of wide cellular probe rate and high GPS update frequency should provide better estimation of traffic conditions.

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Wireless Location Technology-Based Traffic Monitoring: Critical Assessment and Evaluation of an Early-Generation System

Cited by 37 publications

References 3 publications

Using Cellular Network for Inner-Suburban Freeway Traffic Monitoring

Using Cellular Network for Inner-Suburban Freeway Traffic Monitoring

Freeway Traffic Management and Control

Comparative study on GPS and cellular probe techniques for freeway travel speed estimations

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