Communication requirements for crash avoidance

Jason J. Haas, Yih Chun Hu

Research output: Chapter in Book/Report/Conference proceedingConference contribution


Safety applications are a driving force behind VANET deployment. Automobile manufacturers, government organizations, and consortia of the two have been investigating using VANETs for safety applications. Though VANETs are in large part designed for safety applications, researchers do not yet know the communication requirements of VANET safety messages. As a result, protocol designers have relied on generic network success metrics, such as packet delivery ratio, to evaluate their protocols. However, a more useful metric is the ability of currently proposed VANET schemes (e.g., for authentication, power control, etc.) to allow vehicles to receive safety messages and warn their drivers sufficiently in advance of an accident so that the driver can avoid the accident. Besides the basic safety message service, researchers have proposed other VANET mechanisms and services including mix zones [2, 5] and silent periods [18, 8, 17] to enhance vehicle privacy, intelligent transportation systems [24], and commercial applications [12]. However, these applications face a similar question: will a VANET be able to support these services and still achieve the safety goals for which the VANET was designed? Previous attempts at answering the above questions have been made using small test beds without any collisions and using vehicle kinematics and message reception probabilities. However, each of these approaches lack the realism (i.e., actual crashes) and scale that VANETs will have. In this paper, we present our results from simulating two vehicular safety applications. We simulated crash scenarios and determined the probability that vehicles could avoid the crashes. Additionally, we measured the communication requirements needed for those probabilities.

Original languageEnglish (US)
Title of host publicationProceedings of the 7th ACM Int. Workshop on VehiculAr InterNETworking, VANET '10, Co-located with MobiCom'10 and 11th ACM International Symposium on Mobile Ad Hoc Networking and Computing, MobiHoc'10
PublisherAssociation for Computing Machinery
Number of pages10
ISBN (Print)9781450301459
StatePublished - 2010
Event7th ACM International Workshop on VehiculAr InterNETworking, VANET '10 - Chicago, IL, United States
Duration: Sep 20 2010Sep 24 2010

Publication series

NameProceedings of the Annual International Conference on Mobile Computing and Networking, MOBICOM


Other7th ACM International Workshop on VehiculAr InterNETworking, VANET '10
Country/TerritoryUnited States
CityChicago, IL


  • Communication
  • Metrics
  • Safety
  • Simulation
  • Vehicular networks

ASJC Scopus subject areas

  • Software
  • Hardware and Architecture
  • Computer Networks and Communications


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