Advertisement

Train’s Speed Was Normal Until Minutes Before It Derailed

Washington

Baltimore

Recent Trains

Typical high speeds

Train No. 188

Recorded speeds

Wilmington

Philadelphia

Trenton

Princeton

Newark

Manhattan

20 Miles

The Northeast Regional Train No. 188 that derailed on Tuesday had been traveling at speeds similar to earlier trains along the route from Washington to Philadelphia. A National Transportation Safety Board official said that train engineers are expected to know the speed restrictions along the entire route.

Site of derailment

Frankford Junction

To N.Y.C.

Pennsylvania

The median speed in this section was 58 m.p.h.

Trains usually accelerate to more than 100 m.p.h. after the junction.

94 m.p.h.

106 m.p.h.

58 m.p.h.

Most trains slow as they approach the curve into Frankford Junction. Train No. 188 accelerated.

Width of orange

band represents

typical speeds.

29 m.p.h.

The median speed of trains in this section in the three days before the accident was 29 m.p.h.

Philadelphia

New

Jersey

30th Street

Station

Train No. 188

49 m.p.h.

1 Mile

From Washington

1The median speed of trains in this section in the three days before the accident was 29 m.p.h.

2The median speed in this section was 58 m.p.h.

3Most trains slow as they approach the curve into Frankford Junction. Train No. 188 accelerated.

4Trains usually accelerate to more than 100 m.p.h. after the junction.

By The New York Times | Source: Data from Amtrak via Eric Fischer at Mapbox. Analysis based on train speed data from March 10, 11 and 12.

Where the Safety System That Might Have
Prevented the Accident Has Been Installed

The derailment area was not yet equipped with a safety system called positive train control that is designed to keep trains below maximum speed. Congress has mandated that all rail lines have the system by year’s end. Amtrak has installed it on three sections of the Northeast Corridor. “Based on what we know, had such a system been installed in this section of track, this accident would not have occurred,” said Robert Sumwalt, a member of the National Transportation Safety Board.

N.H.

VT.

Buffalo

N.Y.

Boston

MASS.

Sections of the

Northeast Corridor

equipped with

positive train

control

R.I.

CONN.

New Haven

PA.

Pittsburgh

New York

Philadelphia

N.J.

Site of train

derailment

Baltimore

MD.

W.VA.

Washington

DEL.

By The New York Times | Sources: Federal Railroad Administration; National Transportation Safety Board

Train Was Going Twice the Speed Limit

The train derailed at about 9:21 p.m. along a curved stretch of track about eight miles from where the train left 30th Street Station in Philadelphia. An official with the National Transportation Safety Board said the train was traveling at about 106 miles per hour when the engineer applied the brakes, just moments before the derailment.

PENNSYLVANIA

Amtrak

Northeast

Corridor line

speed limit on

straightaway:

80 m.p.h.

To New York

Site of

train derailment

Engine

From

Washington

30th

Street

Station

NEW

JERSEY

speed limit in curve:

50 m.p.h.

Approximate positions

of derailed cars

Delaware R.

Philadelphia

3 miles

By The New York Times; aerial photo by Pictometry International

A Scene of Devastation

Most of the train’s passenger cars tumbled onto their sides and crumpled. The first car was mangled almost beyond recognition.

The engine pulling the train separated from the passenger cars and came to rest diagonally across another set of tracks.

First car

To New York

First car

Business class

Engine

Second car

Quiet car

From

Washington

Fourth car

Cafe car

By The New York Times; aerial photo by Patrick Semansky/Associated Press