Author: John C. HalePublisher:
ISBN:
Category : Traffic signs and signals
Languages : en
Pages : 46
Book Description
Study of Traffic Loop Failures
Author: John C. HalePublisher:
ISBN:
Category : Traffic signs and signals
Languages : en
Pages : 46
Book Description
Evaluation and Improvement of Inductive-loop Detectors
Author: Edward W. BikowitzPublisher:
ISBN:
Category :
Languages : en
Pages : 46
Book Description
It was determined in 1980 that up to a quarter of New York State's 15,000 inductive loop detectors, used to control traffic signals, were out of order at any given time, and were maintenance-free for an average of only two years. A study began to find the major causes of loop failures and how to reduce them. Installation methods in New York and elsewhere were investigated, and hundreds of failed loops studied to find failure types and causes. Data suggested that these were mainly due to improper installation, inadequate loop sealants, or wire failure.
Deliver a Set of Tools for Resolving Bad Inductive Loops and Correcting Bad Data
Author: Xiao-Yun LuPublisher:
ISBN:
Category : Vehicle detectors
Languages : en
Pages : 218
Book Description
This project prototyped and demonstrated procedures to find and mitigate loop detector errors, and to derive more valuable data from loops. Specifically, methods were developed to find and isolate out loop data which is "bad" or invalid, so that mitigation means, or "fixes" can be implemented. Methods of extracting very accurate speed (+/- 3mph) and vehicle length data (+/- 1meter) from single loop stations were demonstrated to be much more accurate than current Caltrans practice. The validity of these methods were statistically proven using hundreds of thousands of vehicles. Additionally, more accurate and reliable methods of detecting the onset of both recurring or "incident" based congestion were demonstrated. These methods require access to the unprocessed loop detector card data. This unprocessed data can be acquired from the Log170 program, third party loop readers like the Infotek Wizard, or DRI's ubiquitous "C1 reader". DRI intends to implement many of these methodologies in the C1 reader client software, Videosync.
Federally Coordinated Program of Highway Research, Development, and Technology. Annual Progress Report. Fiscal Year 1985
Author: Federally Coordinated Program of Highway Research, Development and Technology
Author: Inductive Loop Detection
Author: Leon ChenFederally Coordinated Program of Highway Research and Development
Author: Transportation Research Record
Author: Evaluation of Induction Loop Installation Procedures in Flexible Pavements
Author: Derald ChristensenPublisher:
ISBN:
Category : Detectors
Languages : en
Pages : 104
Book Description
Author: