Previous Chapter: Summary
Suggested Citation: "1 Introduction ." National Academies of Sciences, Engineering, and Medicine. 2017. Traffic Signal Preemption at Intersections Near Highway–Rail Grade Crossings. Washington, DC: The National Academies Press. doi: 10.17226/24769.
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Suggested Citation: "1 Introduction ." National Academies of Sciences, Engineering, and Medicine. 2017. Traffic Signal Preemption at Intersections Near Highway–Rail Grade Crossings. Washington, DC: The National Academies Press. doi: 10.17226/24769.
Page 4
Suggested Citation: "1 Introduction ." National Academies of Sciences, Engineering, and Medicine. 2017. Traffic Signal Preemption at Intersections Near Highway–Rail Grade Crossings. Washington, DC: The National Academies Press. doi: 10.17226/24769.
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Next Chapter: 2 Overview of the Highway-Rail Grade Crossing System
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