Traffic Signal Preemption at Intersections Near Highway–Rail Grade Crossings (2017) / Chapter Skim
Currently Skimming:
Pages 16-21
The Chapter Skim interface presents what we've algorithmically identified as the most significant single chunk of text within every page in the chapter.
Select key terms on the right to highlight them within pages of the chapter.
From page 16... ...
16 chapter four TRAFFIC SIGNAL SYSTEMS This chapter focuses on how traffic signals near highway–rail grade crossings use railway outputs to clear vehicles from the track(s)
|
From page 17... ...
17 A simpler alternative to the GD preempt is the use of a simultaneous preempt (i.e., railway warning system active) output (RO2)
|
From page 18... ...
18 Another approach is a "smart" traffic signal controller sequence (described in chapter two) following the advance preempt (Sun et al.
|
From page 19... ...
19 QUEUE MANAGEMENT Queue management is a proactive approach to reducing the potential for vehicles stopping on the railway track(s)
|
From page 20... ...
FIGURE 14 Example of a pre-signal with two-preempt operation [Preempt 1 (RO1) and Preempt 2 (RO2)
|
From page 21... ...
21 Queue Cutters The use of queue cutters is less common. Definitions of queue cutters include a separate traffic control signal upstream of a grade crossing that is: • Intended to prevent vehicular queuing across the track(s)
|
Key Terms
This material may be derived from roughly machine-read images, and so is provided only to facilitate research.
More
information on Chapter Skim is available.