NDLI: Exploring credentials of Wi-Fi sensors as a complementary transport data: an Indian experience

Content Provider	IET Digital Library
Author	Gore, Ninad Arkatkar, Shriniwas Joshi, Gaurang Bhaskar, Ashish
Abstract	This study investigates the performance of Wi-Fi sensors positioned at varying lateral and vertical positions on data collection efficiency under prevailing traffic conditions in India. Investigation revealed that penetration rate (a measure of performance of sensor) is significantly influenced by height and lateral position of the sensor. Time gap (time-headway) between successive detection for varying height and the lateral position was modelled using statistical distribution to investigate, how height and lateral positions of sensor influences its performance. It was observed that the variation in time headway causes variation in the number of detections and hence, affects the performance of the sensor. A new performance measure named time-to-detection was developed from the observed distribution of headways and it was observed that time-to-detection is significantly influenced by the sensor location. Further, in addition to lateral and vertical positions, stream speed was also observed to have a significant effect on the sensor performance. Field observed headway and headway values computed using sensor data were thereafter correlated to optimise the sensor location in terms of its vertical and lateral positions. Based on the headway distribution analysis, the study recommends installing a Wi-Fi sensor mainly at ground level along the median to capture temporal variations in traffic parameters more effectively.
Starting Page	1860
Ending Page	1869
Page Count	10
ISSN	1751956X
Volume Number	13
e-ISSN	17519578
Issue Number	Issue 12, Dec (2019)
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/iet-its/13/12
Alternate Webpage(s)	https://digital-library.theiet.org/content/journals/10.1049/iet-its.2019.0251
Journal	IET Intelligent Transport Systems
Publisher Date	2019-08-09
Access Restriction	Open
Rights Holder	© The Institution of Engineering and Technology
Subject Keyword	Complementary Transport Data Computer Communication Data Collection Efficiency Field Observed Headway Headway Distribution Analysis Headway Value Indian Experience Lateral Positions Local Area Network Radio Link And Equipment Sensor Data Sensor Location Sensor Performance Statistical Distribution Statistics Stream Speed Telecommunication Traffic Temporal Variations Time Gap Time Headway Time-to-detection Traffic Condition Traffic Parameter Vertical Positions Wi-Fi Sensor Wireless LAN
Content Type	Text
Resource Type	Article
Subject	Law Transportation Environmental Science Mechanical Engineering

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
8	Digital Preservation Centre (DPC)	Assistance with digitizing and archiving copyright-free printed books	dpc@ndl.gov.in
9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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