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Technological innovation in grade crossing protective systems. Technical report.

Title:Technological innovation in grade crossing protective systems. Technical report.
Author:
Author:
Note:1971
  
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Subject:Collision Prevention/ Collision Avoidance
Subject:Collisions
Subject:Costs
Subject:Crossing Signals
Subject:Electrical impedance
Subject:Grade crossing protection systems
Subject:Highway Engineering Costs
Subject:Highway engineering
Subject:Microwave Systems
Subject:Microwave communication systems
Subject:Prevention
Subject:Radar
Subject:Railroad grade crossings
Subject:Railway Crossings
Subject:Detectors
Subject:Sensors/ Transducers
Subject:Transducers
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