Accession Number : ADA298246

Title :   Workload of the VTS Sector Operator and Implications for Task Design.

Descriptive Note : Final rept.,

Corporate Author : COAST GUARD RESEARCH AND DEVELOPMENT CENTER GROTON CT

Personal Author(s) : Smith, M. W. ; Laxar, K. V. ; Benoit, S. ; Dowd, M. K.

PDF Url : ADA298246

Report Date : DEC 1994

Pagination or Media Count : 83

Abstract : This study identifies the factors determining the vTS sector operator's workload and recommends the most appropriate use of automation to manage that workload. Investigations were conducted at vTS New York (Governors Island) and at vTS Puget Sound (Seattle, WA). The primary tasks, as measured at both sites, were radio communications with traffic, the manual recording of vessel information and track history on cards, and the monitoring of traffic by radar. Analyses found that the primary determiner of the workload of these primary tasks was the number of participating vessels monitored by one operator and the amount of associated radio communications. The findings support the recommendation of a "dynamic" sector to manage workload: that is, an automated system that could keep track of the number of vessels per sector and suggest an early hand-off point from a more busy to a less busy sector or, alternatively, a temporary split of a sector. Additional recommendations include the automation of some vessel communications and the operator- friendly automation of vessel information and tracking. The study identified the vulnerability to high workload of operator-initiated traffic advisories and radar monitoring and recommends automation to assist these functions. The report also includes a brief description of an examination of the vTS Upgrade, an automated console installed at vTS New York in late August 1994, and suggestions for its improvement based on the findings of this study.

Descriptors :   *COMMUNICATION AND RADIO SYSTEMS, *PUGET SOUND, *VESSEL TRAFFIC SYSTEMS, COMPUTER PROGRAMS, COMPUTERIZED SIMULATION, AUTOMATION, HIGH RATE, MONITORING, VULNERABILITY, NEW YORK, TRACKING, RADAR, HUMAN FACTORS ENGINEERING, HISTORY, RECORDING SYSTEMS, MANUAL OPERATION, WORKLOAD, OPERATORS(PERSONNEL), ISLANDS, SPEED REGULATORS.

Subject Categories : Radio Communications
      Electrical and Electronic Equipment
      Cybernetics

Distribution Statement : APPROVED FOR PUBLIC RELEASE