High-speed Rail Development & Crossing Safetyshrp2.transportation.org/Documents/R16 COI info/R16...
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High-speed Rail Development & Crossing Safety
Frank A. Frey, Gen. Engineer
Office of Safety
Highway-Rail Crossing Div.
Washington, D.C. 20590U.S. Department of Transportation
Federal Railroad Administration
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ADVANCING H.S.R. IN THE U.S.A.
- why high-speed rail
- FRA’s Sealed Corridor
- design criteria
2018 Community of Interest – Peer Exchange
Fort Worth, Texas
Michigan Central Train Station – Detroit 1913-1988
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population growth
+ 100 million people by 2050
Why HSR in the US?1
Today – 315 million people
2018 Community of Interest – Peer Exchange
Fort Worth, Texas
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congestion & mobilityWhy HSR in the US?2
20072040
2018 Community of Interest – Peer Exchange
Fort Worth, Texas
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Why HSR in the US?3
energy & environment
2018 Community of Interest – Peer Exchange
Fort Worth, Texas
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Where are the key US markets?4
2018 Community of Interest – Peer Exchange
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2018 Community of Interest – Peer Exchange
Fort Worth, Texas
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2018 Community of Interest – Peer Exchange
Fort Worth, Texas
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Appendix: Potential Tier Structure for Passenger Systems
HighwayRail Grade Crossings Tier 0 IA IB IC II III IV V
Description Regional Rail Conventional Emerging
HSR
HSR Regional
HSR Mixed
Operations
HSR Mixed
Passenger
HSR Dedicated
HSR Express
Max. Speed mph
0-65 0-79 80-110 111-125 126-150 0-150 0-150 0-200/220
Other traffic on same track
None (or temporally separated)
Mixed passenger and freight
Mixed passenger and freight
Mixed passenger and freight
Mixed passenger and freight
Conventional passenger only
None None
Closures Consolidation encouraged in regional and conventional service; funding condition if part of HSR corridor
Demonstrated effort and results required as part of funding process. No crossings above 125 mph
Grade separated – entire corridor
Grade separated – entire corridor
Public highway-rail grade crossings, generally
Private highway-rail grade crossings, generally
Automated warning; supplementary measures where warranted
Automated warning or locked gate preferred; cross-buck and stop or yield sign where conditions permit
Automated warning; supplementary measures where warranted
Automated warning or locked gate preferred; cross-buck and stop or yield sign where conditions permit
Sealed corridor; evaluate need for presence detection and PTC feedback
Automated warning with gates; or locked gate (interlocked with signal system at higher speeds)
Barriers above 110, see §213.247 Presence detection tied to PTC above 110 mph
None or as above
See IC None above 125 mph None above 125 mph
See IC None above 125 mph None above 125 mph
None at any speed None at any speed
None at any speed None at any speed
System Safety Programs
Crossing safety and trespass prevention issues included in SSP process. Plus FRA reviews management decisions and may disapprove.
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Close As Many Grade Crossings As Possible
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What does the FRA look for in crossing design??
- Non-traversable Medians
- 3 or 4 Quadrant Gates
- Gate orientation
- Cantilevers
- Preemption (Advanced or Simultaneous)
- Technologies (VPD, RHM)
2018 Community of Interest – Peer Exchange
Fort Worth, Texas
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Gates with 100’ non-traversable medians
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4-Quad gates
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3-Quad gates
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Pedestrian Treatments
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Pre-Signal
Queue-cutter
Railroad Preemption
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Exit Gate Management System
Remote Health Monitoring
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Cantilevers
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Skewed Crossings
Acute Angled Obtuse Angled
Less 90⁰ Greater 90⁰
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Acute Angled
Bad Good
AREMA Part 3.1.36B
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Obtuse Angled
Good Good
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The best grade crossings are…
2018 Community of Interest – Peer Exchange
Fort Worth, Texas