00225113

Component

http://onlinepubs.trb.org...s/hrr/1967/202/202-003.pdf

MUCH OF THE INTERSTATE HIGHWAY SYSTEM IS THROUGH PREDOMINANTLY RURAL AREAS IN REMOTE AND SPARSELY POPULATED AREAS. A LARGE PORTION OF THE SYSTEM HAS NO AVAILABLE SERVICE FACILITIES. THESE TWO FACTORS HAVE EMPHASIZED THE NEED FOR AN EMERGENCY COMMUNICATION SYSTEM FOR SAFETY AND CONVENIENCE. SUCH A SYSTEM HAS RECENTLY BEEN INSTALLED ON THE ADIRONDACK NORTHWAY /I-87/. THE NORTHWAY EMERGENCY TELEPHONE SYSTEM /NETS/ IS AN INSTALLATION OF 222 TELEPHONES ALONG 55 MILES OF I-87 CONNECTED TO THE NEAREST THREE STATE POLICE STATIONS. THE EMERGENCY TELEPHONES HAVE BEEN EXTENSIVELY USED SINCE INSTALLED ON JANUARY 7, 1966. OVER 2,800 CALLS WERE RECEIVED DURING THE FIRST SEVEN MONTHS OF OPERTION. THE PHYSICAL AND OPERATIONAL FEATURES OF THE SYSTEM ARE DESCRIBED, INCLUDING LOCATION, COST, METHOD OF SERVICING CALLERS, AND EMERGENT PROBLEMS. OVER 75 PERCENT OF THE CALLERS REQUIRED FUEL OR VEHICULAR REPAIR; LESS THAN 1 PERCENT OF ALL CALLS WERE FALSE ALARMS. THE NUMBER OF CALLS PER MILE OF FACILITY WAS FOUND TO VARY DIRECTLY WITH TRAFFIC VOLUME, AND LINEAR REGRESSION IS USED TO INDICATE THE DEGREE OF VARIATION. THE INVESTIGATION OF THE EFFECT OF TRIP PURPOSE ON THE CALLING RATE REVEALED NO FINITE RELATIONSHIPS, HOWEVER, A TREND IS EVIDENT INDICATING A CALLING RATE DECREASE WITH INCREASING TRAFFIC VOLUME. SEVERAL RESEARCH CONCEPTS ARE SUGGESTED IN RELATED SUBJECT AREAS, SOME OF WHICH WILL FORM A CONTINUATION OF THE PRESENT STUDY. /AUTHOR/

Paper sponsored by Committee on Freeway Operations and presented at the 46th Annual Meeting. Distribution, posting, or copying of this PDF is strictly prohibited without written permission of the Transportation Research Board of the National Academy of Sciences. Unless otherwise indicated, all materials in this PDF are copyrighted by the National Academy of Sciences. Copyright © National Academy of Sciences. All rights reserved

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pp 67-75

1967

Highway Research Record

Print

Figures (12) ; References (1)

Communication systems; Costs; Disasters and emergency operations; Hazards and emergency operations; Level of service; Location; Operations; Telephone

Interstate Highway System

Services

Administration and Management; Finance; Highways; Operations and Traffic Management

TRIS, TRB

Apr 1 1994 12:00AM

• A NATIONWIDE STUDY OF FREEWAY MERGING OPERATIONS
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• OPERATIONAL EFFECTS OF AUTOMATIC RAMP CONTROL ON NETWORK TRAFFIC