00797cas|a2200181 i 450000500170000000800410001703500150005810000210007324500980009426001090019230000110030149000210031250000990033365000300043265000320046270000200049481001010051420260817163015.0030806s1948    us  uzm rtt  00|  a1eng d  a.b118919561 aBromberg, Robert10aApplications of electronic techniques to traffic instrumentation /cby ... and D. L. Gerlough  aBerkeley, Calif. :bInstitute of Transportation and Traffic Engineering, University of California,c1948  a353 p.1 aReprint ;vno. 3  aReprinted from Proceedings of the 28th Annual Meeting of the Highway Research Board, Dec. 194810aTraffic signs and signals10aElectronic traffic controls10aGerlough, D. L.1 aCalifornia.bUniversity.bInstitute of Transportation and Traffic Engineering.tReprint ;vno. 3