Study of 55 mi of rural interstate highway with telephones in New York showed that false alarms were negligible and that over 75% of those using emergency phones needed fuel or vehicular repairs; trend indicating decreased use of phones with increasing traffic volume was evident.
Evaluation of Northway emergency telephone system
Nat Research Council -- Highway Research Board -- Research Rec
1967
9 pages
Aufsatz (Zeitschrift)
Englisch
© Metadata Copyright Elsevier B. V. All rights reserved.
Europäisches Patentamt | 2017
|Europäisches Patentamt | 2015
|EMERGENCY REPORT SYSTEM, SERVICE CENTER, AND PORTABLE TELEPHONE
Europäisches Patentamt | 2015
|EMERGENCY REPORT SYSTEM, SERVICE CENTER, AND MOBILE TELEPHONE
Europäisches Patentamt | 2015
|RAU 42-new emergency telephone network
Tema Archiv | 1990
|