High-resolution traffic sensing with probe autonomous vehicles: A data-driven approach

Wei Ma, Sean Qian

Research output: Journal article publicationJournal articleAcademic researchpeer-review

20 Citations (Scopus)


Recent decades have witnessed the breakthrough of autonomous vehicles (AVs), and the sensing capabilities of AVs have been dramatically improved. Various sensors installed on AVs will be collecting massive data and perceiving the surrounding traffic continuously. In fact, a fleet of AVs can serve as floating (or probe) sensors, which can be utilized to infer traffic information while cruising around the roadway networks. Unlike conventional traffic sensing methods relying on fixed location sensors or moving sensors that acquire only the information of their carrying vehicle, this paper leverages data from AVs carrying sensors for not only the information of the AVs, but also the characteristics of the surrounding traffic. A high-resolution data-driven traffic sensing framework is proposed, which estimates the fundamental traffic state characteristics, namely, flow, density and speed in high spatio-temporal resolutions and of each lane on a general road, and it is developed under different levels of AV perception capabilities and for any AV market penetration rate. Experimental results show that the proposed method achieves high accuracy even with a low AV market penetration rate. This study would help policymakers and private sectors (e.g., Waymo) to understand the values of massive data collected by AVs in traffic operation and management.

Original languageEnglish
Article number464
Pages (from-to)1-35
Number of pages35
JournalSensors (Switzerland)
Issue number2
Publication statusPublished - 2 Jan 2021


  • Autonomous vehicle
  • Camera
  • Data-driven
  • LiDAR
  • State estimation
  • Traffic flow
  • Traffic sensing

ASJC Scopus subject areas

  • Analytical Chemistry
  • Biochemistry
  • Atomic and Molecular Physics, and Optics
  • Instrumentation
  • Electrical and Electronic Engineering


Dive into the research topics of 'High-resolution traffic sensing with probe autonomous vehicles: A data-driven approach'. Together they form a unique fingerprint.

Cite this