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Highway IDEA Program Operational Tests of the Conservation Traffic Control Load Switch Final Report for Highway IDEA Project

26 Prepared by: Gregory A.

Filbrun Conservation Load Switch, Inc. Westerville, Ohioois November

1996 ii INNOVATIONS DESERVING EXPLORATORY ANALYSIS (IDEA) PROGRAMS MANAGED BY THE TRANSPORTATION RESEARCH BOARD (TRB) This NCHRP-IDEA investigation by Conservation Load Switch, Inc. was completed as part of the National Cooperative Highway Research Program (NCHRP). The NCHRP-IDEA program is one of the three IDEA programs managed by the Transportation Research Board (TRB) to foster innovations in highway and intermodal surface transportation systems. The other two IDEA program areas are TRANSIT-IDEA, which focuses on products and results for transit practice, in support of the Transit Cooperative Research Program (TCRP), and ITS-IDEA, which focuses on products and results for the development and deployment of intelligent transportation systems (ITS), in support of the U.S. Department of Transportation'

s national ITS program plan. The three IDEA program areas are integrated to achieve the development and testing of nontraditional and innovative concepts, methods, and technologies, including conversion technologies from the defense, aerospace, computer, and communication sectors that are new to highway, transit, intelligent, and intermodal surface transportation systems. For information on the IDEA Program contact IDEA Program, Transportation Research Board,

500 5th Street, N.W., Washington, D.C.

20001 (phone: 202/334-1461, fax: 202/334-3471, http://www.nationalacademies.org/trb/idea). The project that is the subject of this contractor-authored report was a part of the Innovations Deserving Exploratory Analysis (IDEA) Programs, which are managed by the Transportation Research Board (TRB) with the approval of the Governing Board of the National Research Council. The members of the oversight committee that monitored the project and reviewed the report were chosen for their special competencies and with regard for appropriate balance. The views expressed in this report are those of the contractor who conducted the investigation documented in this report and do not necessarily reflect those of the Transportation Research Board, the National Research Council, or the sponsors of the IDEA Programs. This document has not been edited by TRB. The Transportation Research Board of the National Academies, the National Research Council, and the organizations that sponsor the IDEA Programs do not endorse products or manufacturers. Trade or manufacturers'

names appear herein solely because they are considered essential to the object of the investigation. iii IDEA PROJECT FINAL REPORT Contract NCHRP-94-ID026 IDEA Program Transportation Research Board National Research Council November

1996 OPERATIONAL TESTS OF THE CONSERVATION TRAFFIC CONTROL LOAD SWITCH Prepared by: Gregory A. Filbrun Conservation Load Switch, Inc. Westerville, Ohio xi CONSERVATION TRAFFIC CONTROL LOAD SWITCH TABLE OF CONTENTS EXECUTIVE SUMMARY.1 CTCLS DESCRIPTION AND METHOD OF OPERATION

1 ACCOMPLISHMENTS

1 RESEARCH PROGRESS.2 PROBLEM STATEMENT.2 RESEARCH APPROACH.2 Part One: Inside Signal Lab Testing and Review

2 Part Two: Optional Field Testing and Functioning.5 RESULTS

6 CONCLUSIONS.6

1 EXECUTIVE SUMMARY This project describes the results of operational tests of the new conservation traffic control load switch (CTCLS Model 20867) developed under NCHRP-IDEA Project

8 by Conservation Load Switch, Inc. (CLS, Inc.) of Westerville, Ohio. The CTCLS has been designed to prolong the life of the incandescent lamps used in traffic signals. Depending on the voltage set point selected by a Department of Transportation (DOT), the CTCLS has the ability to extend lamp life by four times. The CTCLS Model