Positive Train Control
E4790
Positive Train Control is an advanced, federally mandated train safety technology designed to automatically prevent collisions, overspeed derailments, and other dangerous train movements.
Aliases (6)
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
railway signaling system
→
safety technology → train control system → |
| alsoKnownAs |
PTC
→
|
| appliesTo |
certain freight railroads
→
lines carrying certain hazardous materials → main lines with commuter rail service → main lines with regularly scheduled intercity passenger service → passenger railroads → |
| canInterveneBy |
automatically applying brakes
→
enforcing speed restrictions → stopping a train before a conflict point → |
| countryOfUse |
United States
→
|
| hasComponent |
back-office PTC system
→
onboard PTC equipment → wayside PTC equipment → wireless communications network → |
| hasDeadline |
extended implementation deadline 2018
→
final extended deadline 2020 → original implementation deadline 2015 → |
| hasLimitation |
depends on accurate track and signal databases
→
does not prevent all types of accidents → |
| hasPurpose |
enhance railroad safety
→
prevent movement of trains through misaligned switches → prevent overspeed derailments → prevent train-to-train collisions → prevent unauthorized train movements in work zones → |
| industryStandardFor |
safety overlay systems on U.S. railroads
→
|
| isImplementedBy |
Amtrak
→
Class I freight railroads in the United States → many U.S. commuter rail agencies → |
| isMandatedBy |
Rail Safety Improvement Act of 2008
→
|
| isPartOf |
United States rail safety program
→
|
| isRelatedTo |
Automatic Train Control
→
Automatic Train Protection → |
| legalStatus |
federally mandated for certain U.S. rail lines
→
|
| monitors |
authorized movement limits
→
signal status → switch position → train location → train speed → |
| regulator |
Federal Railroad Administration
→
United States Department of Transportation → |
| usesTechnology |
GPS
→
back-office servers → onboard computers → wayside interface units → wireless communications → |