An improved suspension system makes the difference, the railroad said.
The railroad said it will award a contract for the 192 new cars early this year.
The railroad also said that a record 65 million people rode its trains last year, 4 percent more than in 1997.
The railroad said work would be completed in 1998, 16 years after the accident.
The railroads also say they are working to create a system that meets security and safety needs.
The on-time figure for 1993 was 92.9 percent, the railroad said.
Her responsibility was to watch the platform, the railroad has said.
The railroad has not said exactly what will be required to fix the trains, which are three to five years old.
The railroad says the base salary of the average employee is $31,190 a year.
They earned an average of $31,190 a year, the railroad said.