A telephone dial-in service to provide information to drivers planning to use Dallas's North Central Expressway was developed and operated for 18 months before being terminated for lack of an acceptable level of use. An evaluation of the effectiveness of the system was made by keeping daily records of calls received and sending a survey questionnaire to a sample of Expressway drivers. After an inital surge of interest when the sytem was inaugurated, usage declined steadly and dramatically, with some temporary increases on the occasion of major accidents or severe weather. General public apathy was also manifested by the low response to the direct mail questionnaires, 103 returns out of about 700 sent. While only 42 per cent of the respondents had used the service, 80 percent of those felt it was accurate. The problem appears to be not the quality of the service, but a need for human factors research to determine techniques for sustaining interest and attention of users.

Media Info

  • Media Type: Print
  • Features: References;
  • Pagination: pp 37-40
  • Monograph Title: Traffic records, law enforcement, and motorist-aid systems
  • Serial:

Subject/Index Terms

Filing Info

  • Accession Number: 00177287
  • Record Type: Publication
  • ISBN: 0309026725
  • Files: TRIS, TRB
  • Created Date: Jun 28 1978 12:00AM