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Catalog Number 10582-9-(1)
Title M-3 Vehicle Detector Transistor No-4A
Object Name Transistor
Description A metal box with screws holding it together. One switch in the upper-left corner. A power plug in the lower-right corner. A switch in the lower middle. Two holes with pug-ins on the lower left. Two amphanels on the right side. On the bottom there are plug-ins on green, red, and blue. Also, four screws labeled R4, R3, R2, R1 are located on the back.
color: red, black, metallic
Date 1958-08
Year Range from 1958
Year Range to 1908
Culture American
Material red, black, metallic
Made Rca
Used Lincoln
Height (in) 3
Width (in) 5
Depth (in) 4
Search Terms Nebraska Department of Roads
History This vehicle detector transistor was used in the automatic driving test project developed by Leland Hancock and the Nebraska Department of Roads in the 1950s. The proposed project involved installing an autopilot feature in cars and highways that could take over a car in an emergency.
Credit line Leland M. Hancock, Lincoln (Lancaster), Nebraska
Collection Hancock, Leland M.
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