U.S. flag An official website of the United States government.
Official websites use .gov

A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS

A lock ( ) or https:// means you've safely connected to the .gov website. Share sensitive information only on official, secure websites.

Federal Railroad Administration

rosaP Repository & Open Science Access Portal

The Federal Railroad Administration (FRA) promotes safe and environmentally sound rail transportation. The FRA conducts research and development tests to evaluate projects in support of its safety mission and to enhance the railroad system as a national transportation resource. Public education campaigns on highway-rail grade crossing safety and the danger of trespassing on rail property are also administered by FRA. Bookmark this collection https://rosap.ntl.bts.gov/collection_fra or https://doi.org/10.21949/1530835.

(6)
(44)
(53)
(79)
(68)
(88)
(73)
(32)
(33)
(40)
(30)
(26)
(15)
(11)
(29)
(13)
(40)
(28)
(42)
(47)
(28)
(18)
(30)
(20)
(21)
(18)
(22)
(17)
(10)
(10)
(18)
(5)
(27)
(9)
(3)
(3)
(1)
(3)
(2)
(1)
(1)
(5)
(3)
(14)
(10)
(10)
(8)
(10)
(15)
(11)
(5)
(1)
(2)
(3)
(1)
0 of 55
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(5)
(1)
(1)
(2)
(3)
(1)
(1)
(2)
(3)
(1)
(2)
(9)
(1)
(3)
(1)
(1)
(1)
(2)
(1)
(2)
(1)
(2)
(1)
(2)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(15)
(1)
(1)
(3)
(2)
(3)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(3)
(1)
(4)
(4)
(1)
(1)
(2)
(2)
(2)
(9)
(1)
(2)
(6)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(4)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(3)
(1)
(1)
(2)
(1)
(1)
(4)
(4)
(1)
(1)
(1)
(1)
(1)
(3)
(1)
(2)
(1)
(1)
(1)
(3)
(1)
(4)
(1)
(1)
(1)
(1)
(4)
(6)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(7)
(1)
(1)
(2)
(3)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(2)
(3)
(3)
(1)
(1)
(1)
(1)
(1)
(23)
(12)
(1)
(6)
(1)
(3)
(3)
(2)
(9)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(2)
(4)
(1)
(3)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(2)
(1)
(3)
(2)
(1)
(2)
(1)
(1)
(1)
(3)
(1)
(3)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(13)
(12)
(2)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(2)
(1)
(1)
(5)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(3)
(6)
(17)
(7)
(1)
(3)
(1)
(1)
(6)
(1)
(1)
(1)
(1)
(2)
(1)
(2)
(2)
(2)
(9)
(2)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(3)
(1)
(1)
(2)
(2)
(1)
(1)
(1)
(1)
(4)
(3)
(1)
(1)
(1)
(3)
(2)
(1)
(1)
(1)
(1)
(3)
(1)
(4)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(2)
(1)
(2)
(2)
(2)
(1)
(4)
(2)
(1)
(1)
(3)
(1)
(2)
(1)
(1)
(4)
(1)
(1)
(2)
(20)
(1)
(1)
(3)
(1)
(2)
(7)
(1)
(1)
(4)
(1)
(1)
(1)
(1)
(1)
(3)
(1)
(2)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(3)
(1)
(8)
(1)
(1)
(1)
(1)
(2)
(1)
(3)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(8)
(1)
(4)
(9)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(4)
(1)
(1)
(1)
(1)
(1)
(3)
(7)
(1)
(1)
(2)
(1)
(1)
(2)
(1)
(1)
(2)
(1)
(2)
(1)
(1)
(1)
(2)
(1)
(2)
(1)
(2)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(2)
(5)
(2)
(6)
(1)
(4)
(6)
(19)
(2)
(1)
(7)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(3)
(1)
(1)
(1)
(3)
(1)
(1)
(1)
(3)
(1)
(1)
(4)
(1)
(3)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(3)
(1)
(1)
(1)
(1)
(1)
(3)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(6)
(3)
(1)
(1)
(1)
(1)
(2)
(5)
(1)
(4)
(3)
(1)
(1)
(6)
(1)
(2)
(1)
(2)
(1)
(1)
(4)
(3)
(6)
(2)
(1)
(1)
(7)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(2)
(1)
(2)
(2)
(1)
(2)
(2)
(3)
(3)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(5)
(1)
(6)
(1)
(1)
(1)
(1)
(6)
(1)
(20)
(1)
(1)
(2)
(2)
(1)
(1)
(2)
(3)
(6)
(2)
(13)
(16)
(3)
(1)
(5)
(1)
(3)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(3)
(5)
(3)
(1)
(1)
(1)
(2)
(1)
(1)
(2)
(4)
(2)
(1)
(2)
(2)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(3)
(4)
(1)
(3)
(5)
(1)
(1)
(2)
(18)
(1)
(1)
(5)
(1)
(4)
(1)
(1)
(3)
(3)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(3)
(5)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(3)
(5)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(4)
(2)
(1)
(1)
(1)
(6)
(3)
(4)
(3)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(7)
(1)
(2)
(1)
(1)
(1)
(1)
(8)
(1)
(5)
(1)
(1)
(1)
(1)
(4)
(1)
(1)
(1)
(3)
(1)
(1)
(1)
(1)
(4)
(1)
(14)
(2)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(3)
(1)
(9)
(1)
(2)
(1)
(1)
(1)
(2)
(1)
(1)
(2)
(3)
(2)
(1)
(1)
(1)
(2)
(2)
(4)
(1)
(4)
(6)
(5)
(3)
(19)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(5)
(1)
(1)
(1)
(1)
(1)
(5)
(2)
(10)
(1)
(1)
(1)
(1)
(1)
(2)
(3)
(1)
(5)
(1)
(1)
(1)
(1)
(2)
(1)
(3)
(1)
(8)
(1)
(1)
(6)
(1)
(2)
(1)
(1)
(1)
(4)
(1)
(1)
(1)
(3)
(1)
(3)
(1)
(1)
(1)
(1)
(1)
(2)
(2)
(4)
(2)
(1)
(2)
(1)
(1)
(4)
(3)
(1)
(1)
(1)
(4)
(9)
(4)
(30)
(2)
(7)
(2)
(2)
(3)
(2)
(16)
(2)
(2)
(3)
(2)
(2)
(4)
(2)
(2)
(7)
(2)
(3)
(3)
(2)
(5)
(7)
(2)
(7)
(2)
(3)
(2)
(5)
(5)
(23)
(15)
(11)
(4)
(2)
(2)
(15)
(5)
(7)
(11)
(4)
(4)
(2)
(3)
(3)
(3)
(13)
(5)
(5)
(7)
(2)
(6)
(4)
(4)
(7)
(2)
(3)
(16)
(8)
(5)
(2)
(4)
(6)
(2)
(2)
(2)
(3)
(2)
(2)
(4)
(2)
(2)
(3)
(3)
(3)
(2)
(4)
(4)
(7)
(8)
(2)
(3)
(3)
(9)
(2)
(3)
(4)
(4)
(2)
(2)
(4)
(2)
(2)
(2)
(14)
(12)
(3)
(4)
(4)
(2)
(9)
(6)
(2)
(4)
(3)
(2)
(3)
(14)
(2)
(2)
(10)
(4)
(2)
(2)
(2)
(3)
(2)
(2)
(6)
(2)
(3)
(4)
(13)
(3)
(12)
(26)
(2)
(3)
(3)
(2)
(3)
(2)
(2)
(2)
(2)
(4)
(5)
(4)
(2)
(7)
(2)
(2)
(3)
(4)
(7)
(3)
(6)
(2)
(4)
(2)
(2)
(9)
(23)
(3)
(2)
(8)
(8)
(2)
(2)
(2)
(2)
(2)
(2)
(4)
(2)
(8)
(2)
(9)
(5)
(2)
(2)
(8)
(2)
(3)
(9)
(2)
(5)
(3)
(2)
(8)
(2)
(4)
(2)
(2)
(2)
(4)
(2)
(3)
(3)
0 of 1000
(1)
(10)
(190)
(1)
(2)
(7)
(1)
(1)
(3)
(4)
(89)
(100)
(1)
(752)
0 of 14
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(5)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(4)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(2)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(3)
(1)
(1)
(1)
(1)
(1)
(1)
(10)
(1)
(1)
(1)
(1)
(1)
(2)
(2)
(1)
(1)
(3)
(2)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(7)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(4)
(2)
(13)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(11)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(3)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(2)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(4)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(21)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(3)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(6)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(3)
(1)
(1)
(1)
(1)
(3)
(1)
(1)
(1)
(1)
(1)
(2)
(10)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(6)
(4)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(3)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(2)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(3)
(3)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(2)
(2)
(1)
(1)
(1)
(2)
(1)
(3)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(3)
(2)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
0 of 561
(2)
0 of 1
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(4)
(1)
(6)
(2)
(1)
(7)
(2)
(18)
(2)
(1)
(5)
(4)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(2)
(1)
(1)
(4)
(1)
(1)
(1)
(3)
(1)
(1)
(2)
(9)
(3)
(3)
(13)
(10)
(6)
(1)
(1)
(4)
(1)
(18)
(7)
(1)
(1)
(2)
(2)
(3)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(3)
(1)
(1)
(1)
(1)
(3)
(3)
(2)
(1)
(2)
(1)
(3)
(5)
(1)
(359)
(2)
(1)
(2)
(1)
(1)
(1)
(3)
(1)
(2)
(1)
(1)
(3)
(2)
(1)
(1)
(2)
(2)
(7)
(1)
(1)
(1)
(2)
(8)
(4)
(1)
(1)
(5)
(1)
(1)
(4)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(3)
(1)
(2)
(3)
(1)
(2)
(1)
(1)
(1)
(2)
(1)
(1)
(2)
(1)
(1)
(11)
(1)
(1)
(2)
(3)
(1)
(1)
(2)
(1)
(4)
(1)
(3)
(1)
(34)
(2)
(4)
(2)
(4)
(1)
(3)
(1)
(10)
(9)
(4)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(2)
(2)
(1)
(2)
(1)
(21)
(1)
(1)
(1)
(1)
(2)
(1)
(16)
(114)
(3)
(3)
(2)
(12)
(1)
(1)
(1)
(1)
(113)
(1)
(1)
(2)
(15)
(2)
(1)
(5)
(58)
(1)
(48)
(2)
(1)
(1)
(10)
(2)
(1)
(2)
(1)
(2)
(1)
(1)
(1)
(54)
(1)
(15)
(25)
(21)
(6)
(1)
(1)
(1)
(1)
(1)
(2)
(4)
(1)
(1)
(1)
(1)
(1)
(8)
(4)
(3)
(1)
(4)
(1)
(2)
(1)
(1)
(1)
(2)
(2)
(1)
(1)
(2)
(1)
(1)
(1)
(5)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(2)
(1)
(12)
(3)
(1)
0 of 294
(50)
(1)
(1)
(1)
(15)
(1)
(28)
(1)
(1)
(4)
(2)
(3)
(1)
(1)
(2)
(1)
(2)
(1)
(1)
(1)
(555)
(1)
(9)
(1)
(133)
(56)
(1)
(2)
(3)
(1)
(1)
(1)
(3)
(3)
(1)
(3)
(86)
(58)
(8)
(20)
(155)
(1)
(1)
(1)
(1)
(1)
(1)
0 of 47
(2)
(2)
(3)
(2)
(2)
(4)
(9)
(2)
(2)
(3)
(4)
(4)
(5)
(2)
(5)
(3)
(10)
(3)
(6)
(2)
(2)
(4)
(2)
(2)
(2)
(4)
(3)
(2)
(4)
(5)
(5)
(4)
(2)
(14)
(21)
(4)
(2)
(5)
(4)
(3)
(2)
(3)
(2)
(8)
(2)
(9)
(2)
(10)
(2)
(3)
(4)
(5)
(2)
(4)
(7)
(2)
(5)
(2)
(7)
(2)
(2)
(9)
(2)
(3)
(5)
(2)
(3)
(25)
(5)
(6)
(12)
(3)
(4)
(3)
(4)
(8)
(5)
(3)
(38)
(3)
(2)
(2)
(2)
(3)
(4)
(3)
(20)
(2)
(2)
(4)
(2)
(13)
(17)
(3)
(2)
(2)
(3)
(4)
(2)
(2)
(4)
(2)
(2)
(9)
(16)
(8)
(5)
(2)
(5)
(11)
(5)
(3)
(3)
(22)
(3)
(9)
(2)
(2)
(2)
(2)
(2)
(12)
(3)
(26)
(7)
(3)
(5)
(2)
(2)
(2)
(4)
(3)
(2)
(3)
(2)
(2)
(13)
(3)
(2)
(2)
(5)
(2)
(2)
(2)
(4)
(2)
(11)
(5)
(2)
(2)
(5)
(52)
(2)
(2)
(2)
(3)
(3)
(11)
(3)
(8)
(21)
(2)
(6)
(6)
(2)
(5)
(2)
(9)
(2)
(2)
(4)
(11)
(2)
(6)
(4)
(2)
(3)
(2)
(2)
(11)
(6)
(12)
(2)
(2)
(6)
(2)
(2)
(2)
(5)
(11)
(2)
(7)
(3)
(6)
(3)
(5)
(7)
(7)
(2)
(8)
(2)
(14)
(15)
(2)
(24)
(3)
(2)
(3)
(34)
(2)
(9)
(5)
(4)
(5)
(19)
(5)
(2)
(11)
(3)
(2)
(36)
(10)
(8)
(2)
(2)
(4)
(5)
(3)
(40)
(3)
(16)
(120)
(4)
(2)
(2)
(3)
(6)
(2)
(3)
(3)
(5)
(4)
(4)
(2)
(3)
(12)
(6)
(22)
(2)
(10)
(3)
(3)
(2)
(2)
(2)
(2)
(5)
(2)
(18)
(3)
(3)
(20)
(5)
(11)
(2)
(3)
(2)
(5)
(32)
(30)
(2)
(4)
(12)
(13)
(4)
(6)
(2)
(3)
(5)
(4)
(2)
(2)
(3)
(5)
(2)
(4)
(3)
(2)
(2)
(4)
(15)
(4)
(3)
(3)
(2)
(2)
(2)
(3)
(2)
(2)
(3)
(3)
(2)
(5)
(5)
(3)
(3)
(10)
(2)
(2)
(6)
(5)
(18)
(6)
(7)
(11)
(16)
(2)
(17)
(8)
(2)
(3)
(3)
(5)
(2)
(2)
(6)
(2)
(13)
(5)
(4)
(2)
(2)
(4)
(3)
(2)
(2)
(2)
(2)
(2)
(2)
(2)
(2)
(3)
(2)
(4)
(2)
(15)
(3)
(2)
(2)
(3)
(2)
(2)
(7)
(4)
(2)
(2)
(2)
(2)
(12)
(2)
(2)
(3)
(11)
(4)
(2)
(2)
(4)
(2)
(2)
(2)
(6)
(2)
(12)
(2)
(2)
(3)
(2)
(2)
(2)
(2)
(3)
(3)
(2)
(3)
(8)
(25)
(19)
(2)
(2)
(3)
(7)
(19)
(10)
(6)
(3)
(35)
(5)
(19)
(25)
(6)
(2)
(2)
(7)
(4)
(10)
(7)
(4)
(9)
(2)
(4)
(32)
(5)
(13)
(3)
(92)
(6)
(2)
(4)
(8)
(2)
(2)
(6)
(2)
(2)
(2)
(4)
(6)
(4)
(2)
(9)
(2)
(5)
(2)
(2)
(3)
(2)
(8)
(5)
(6)
(2)
(3)
(18)
(7)
(10)
(2)
(3)
(2)
(36)
(2)
(2)
(35)
(13)
(6)
(2)
(10)
(4)
(2)
(4)
(4)
(10)
(2)
(2)
(10)
(2)
(2)
(5)
(4)
(11)
(2)
(10)
(2)
(4)
(10)
(8)
(2)
(34)
(2)
(8)
(5)
(9)
(13)
(3)
(4)
(4)
(56)
(3)
(6)
(5)
(3)
(4)
(4)
(3)
(4)
(3)
(6)
(3)
(3)
(4)
(5)
(6)
(3)
(3)
(3)
(43)
(79)
(3)
(4)
(3)
(3)
(4)
(3)
(3)
(7)
(13)
(10)
(14)
(4)
(10)
(83)
(4)
(10)
(18)
(3)
(5)
(5)
(3)
(3)
(5)
(4)
(8)
(3)
(11)
(5)
(7)
(4)
(82)
(6)
(3)
(3)
(3)
(10)
(19)
(3)
(46)
(8)
(4)
(5)
(14)
(3)
(11)
(3)
(4)
(3)
(11)
(5)
(4)
(4)
(4)
(5)
(6)
(4)
(4)
(22)
(10)
(3)
(3)
(4)
(5)
(5)
(4)
(3)
(14)
(3)
(4)
(4)
(5)
(4)
(3)
(3)
(10)
(5)
(4)
(8)
(4)
(4)
(3)
(5)
(14)
(7)
(4)
(4)
(5)
(26)
(4)
(6)
(4)
(101)
(5)
(3)
(13)
(4)
(3)
(18)
(27)
(3)
(3)
(10)
(4)
(32)
(5)
(6)
(4)
(3)
(5)
(4)
(5)
(3)
(4)
(22)
(11)
(16)
(4)
(4)
(3)
(13)
(4)
(3)
(3)
(6)
(3)
(5)
(17)
(3)
(3)
(11)
(3)
(3)
(3)
(3)
(3)
(5)
(4)
(4)
(8)
(8)
(3)
(16)
(4)
(3)
(20)
(12)
(9)
(4)
(10)
(15)
(3)
(10)
(7)
(3)
(65)
(4)
(3)
(5)
(5)
(12)
(3)
(3)
(5)
(5)
(58)
(3)
(3)
(7)
(3)
(22)
(5)
(12)
(11)
(3)
(17)
(4)
(4)
(3)
(3)
(4)
(4)
(5)
(3)
(4)
(3)
(10)
(5)
(73)
(9)
(3)
(3)
(8)
(7)
(9)
(4)
(23)
(3)
(6)
(4)
(3)
(9)
(21)
(3)
(22)
(6)
(31)
(3)
(3)
(3)
(4)
(4)
(73)
(6)
(3)
(3)
(10)
(3)
(3)
(5)
(6)
(4)
(5)
(4)
(24)
(3)
(12)
(5)
(75)
(17)
(76)
(6)
(4)
(6)
(9)
(3)
(10)
(10)
(137)
(7)
(192)
(3)
(302)
(3)
(8)
(6)
(7)
(4)
(34)
(130)
(10)
(10)
(4)
(55)
(56)
(7)
(17)
(15)
(7)
(6)
(4)
(5)
(5)
(11)
(4)
(22)
(10)
(8)
(5)
(3)
(11)
(30)
(8)
(18)
(3)
(9)
(3)
(3)
(3)
(3)
(8)
(13)
(5)
(6)
(17)
(28)
(3)
(3)
(5)
(3)
(4)
(32)
(3)
(45)
(3)
(65)
(8)
(9)
(41)
(23)
(4)
(5)
(6)
(3)
(7)
(19)
(7)
(8)
(7)
(13)
(3)
(10)
(3)
(3)
(13)
(3)
(6)
(17)
(3)
(3)
(3)
(6)
(9)
(3)
(17)
(3)
(7)
(3)
(3)
(4)
(57)
(12)
(13)
(7)
(10)
(3)
(3)
(8)
(4)
(13)
(18)
(10)
(3)
(3)
(3)
(3)
(4)
(3)
(5)
(26)
(5)
(7)
(3)
(20)
(17)
(7)
(3)
(4)
(11)
(5)
(3)
(4)
(14)
(22)
(6)
(4)
(3)
(3)
(3)
(9)
(3)
(13)
(3)
(12)
(5)
(3)
(5)
(3)
(3)
(5)
(3)
(7)
(3)
(9)
(95)
(4)
(12)
(12)
(4)
(7)
(10)
(5)
(4)
(3)
(30)
(4)
(7)
(14)
(3)
(3)
(5)
(8)
(4)
(3)
(3)
(3)
(6)
(3)
(4)
(7)
(9)
(6)
(4)
(4)
(6)
(9)
(4)
(4)
(3)
(4)
(28)
(3)
(23)
(4)
(13)
(12)
(4)
(26)
(3)
(5)
(3)
(10)
(5)
(7)
(7)
(24)
(3)
(7)
(8)
(29)
(11)
(4)
(10)
(5)
(5)
(4)
(3)
(3)
(23)
(5)
(3)
(25)
(4)
(9)
(3)
(3)
(19)
(4)
(8)
(3)
(4)
(3)
(4)
(3)
(5)
(15)
(8)
(8)
(4)
(3)
(4)
(6)
(6)
(3)
(3)
(7)
(8)
(19)
(9)
(3)
(3)
(4)
(4)
(5)
(11)
(5)
(5)
(9)
(3)
(3)
(7)
(3)
(18)
(3)
0 of 1000
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(3)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(4)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(4)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
(1)
(1)
(2)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(1)
(2)
0 of 1000
Showing 121 - 140 of 1162 results
  • Evaluation of EngineeredPolymer Composite Tie Performance in Revenue Service Research Results
    Evaluation of Engineered-Polymer Composite Tie Performance in Revenue Service [Research Results]
    Baillargeon, Jay ;
    Woody, Stephen (Sean)
    2022-09-01 | PDF
    The Federal Railroad Administration (FRA) and the Association of American Railroads (AAR) investigated the in-track performance of engineered-polymer composite (EPC) ties. This report summarizes the results from a revenue service test conducted by the Transportation Technology Center, Inc. (TTCI) between 2018 and 2021. Visual inspection identified ...
  • OnBoard Broken Rail Detection OBRD Research and Development Research Results
    On-Board Broken Rail Detection (OBRD) Research and Development [Research Results]
    Withers, Jared ;
    Rosier, Isaac
    2022-09-01 | PDF
    From October 2019 to May 2022, the Federal Railroad Administration (FRA) sponsored a research and development project, performed by Transportation Technology Center, Inc. (TTCI), to research the feasibility of an Onboard Broken Rail Detection (OBRD) concept at the Transportation Technology Center. The research team collaborated with a rail industry ...
  • Demonstration of MechanicsBased Track Geometry Deterioration Models Research Results
    Demonstration of Mechanics-Based Track Geometry Deterioration Models [Research Results]
    Thompson, II, Hugh B
    2022-09-01 | PDF
    The Federal Railroad Administration (FRA) contracted Transportation Technology Center, Inc. (TTCI) to expand on existing mechanics-based ballast condition forecasting models. This report demonstrates how one of the mechanics-based models performs against field data and makes recommendations for improving that model.
  • Performance of Prototype No 20 Frogs in Revenue Service Research Results
    Performance of Prototype No. 20 Frogs in Revenue Service [Research Results]
    Baillargeon, Jay ;
    Woody, Sean
    2022-09-01 | PDF
    Transportation Technology Center, Inc. (TTCI) evaluated the performance of several No. 20 fixed-point frogs on Norfolk Southern Railway (NS) in Kentucky. This effort was part of the Heavy Axle Load (HAL) Revenue Service Test Program jointly supported by the Federal Railroad Administration (FRA) and Association of American Railroads (AAR). Research ...
  • TraintoTrain Impact Test Wheelchair Securement Experiments
    Train-to-Train Impact Test: Wheelchair Securement Experiments
    Gordon, Jeff
    2022-09-01 | PDF
    Researchers crash-tested off-the-shelf wheelchair securement devices in a train-to-train impact test at the Transportation Technology Center in Pueblo, Colorado, on August 11, 2022. Two wheelchair securement devices and one backboard (baseline experiment) were each tested with a Hybrid III 50th percentile male (H3-50M) anthropomorphic test device ( ...
  • Fully Scalable Train Braking Simulation Environment Research Results
    Fully Scalable Train Braking Simulation Environment [Research Results]
    Jacobini, Francesco Bedini ;
    Anaya, Rachel
    2022-09-01 | PDF
    Transportation Technology Center, Inc. (MxV Rail), through a research project funded by the Federal Railroad Administration (FRA), developed a Concept of Operations (ConOps), documented the infrastructure design, and developed software to support a virtualized fully scalable train braking simulation environment (FSTBSE) that expands upon the capabi ...
  • Screw Spike and Spring Washer HoldDown Force and Resiliency Investigation Research Results
    Screw Spike and Spring Washer Hold-Down Force and Resiliency Investigation [Research Results]
    Stuart, Cameron ;
    Dersch, Marcus S.
    2022-09-01 | PDF
    The Rail Transportation Engineering Center (RailTEC) at the University of Illinois (Illinois) is investigating spike failures in timber tie track to determine the root cause(s) and develop failure prevention strategies. This research is part of an ongoing investigation into spike failures sponsored by the Federal Railroad Administration (FRA) that ...
  • Mitigation of Differential Movement at Railway Transitions for US HighSpeed Passenger Rail and Joint PassengerFreight Corridors
    Mitigation of Differential Movement at Railway Transitions for U.S. High-Speed Passenger Rail and Joint Passenger/Freight Corridors
    Tutumluer, Erol ;
    Mishra, Debakanta
    2022-09-01 | PDF
    To address the need to minimize differential movement at railway transitions for joint high-speed passenger and freight routes in the U.S., this research study identified and studied three problematic bridge approaches near Chester, PA, along Amtrak’s Northeast Corridor line and another two on the N-Line mainline of Norfolk Southern near Ingleside, ...
  • Onboard Broken Rail Detection Research and Development
    Onboard Broken Rail Detection Research and Development
    Khasenye, David ;
    Khater, Mohamad
    2022-09-01 | PDF
    The Federal Railroad Administration (FRA) sponsored a project, performed by Transportation Technology Center, Inc. (TTCI), to research the feasibility of an Onboard Broken Rail Detection (OBRD) concept. A parallel long term track impedance characterization effort was undertaken with the objective of understanding and modelling the track as an elect ...
  • LargeScale Testing and Numerical Modeling of Full and ReducedScale Rail Car Floor Assemblies
    Large-Scale Testing and Numerical Modeling of Full- and Reduced-Scale Rail Car Floor Assemblies
    Rippe, Christian ;
    Lattimer, Brian Y.
    2022-09-01 | PDF
    A previously developed methodology for reducing the physical scale of test articles for fire performance testing of rail car floors was benchmarked using a series of large-scale tests and validated finite element simulations. The simulations showed that the experimental differences between the full-scale and reduced-scale test articles was due to t ...
  • Feasibility of Special Trackwork Inspection Using Ultrasonics Research Results
    Feasibility of Special Trackwork Inspection Using Ultrasonics [Research Results]
    Wilson, Robert ;
    Poudel, Anish
    2022-09-01 | PDF
    The Federal Railroad Administration (FRA) co-sponsored Transportation Technology Center, Inc. (TTCI) on a trackwork inspection effort scheduled for completion in September 2022. This research demonstrated the potential for the low-frequency ultrasonic testing (UT) nondestructive evaluation (NDE) method to characterize internal flaws in crossing. Fi ...
  • Side Impact Test and Analyses of a DOT113 Surrogate Tank Car with Cryogenic Lading
    Side Impact Test and Analyses of a DOT-113 Surrogate Tank Car with Cryogenic Lading
    Belport, Steve ;
    Carolan, Michael
    2022-09-01 | PDF
    The Federal Railroad Administration (FRA) conducted a side impact test of a surrogate DOT-113 tank car at the Transportation Technology Center, Inc. (TTCI) to evaluate the performance of the tank car under dynamic impact conditions and to provide data for the verification and refinement of a computational model. The tank car surrogate was filled wi ...
  • Development of Locomotive Powered Freight Car Electrical Power Supply System EPSS Method for Electrical Power Distribution on Freight Trains
    Development of Locomotive Powered Freight Car Electrical Power Supply System (EPSS): Method for Electrical Power Distribution on Freight Trains
    Brabb, David C. ;
    Martin, Kenneth L.
    2022-09-01 | PDF
    The Federal Railroad Administration (FRA) previously demonstrated advanced, remotely controlled, electro-mechanical systems, such as hand brakes, angle cocks, and cut levers that can contribute to increased safety and improved efficiency of freight railroad operations. The main impediment to implementation of such devices is the lack of reliable an ...
  • Rainy Section Track Settlement Model Research Results
    Rainy Section Track Settlement Model [Research Results]
    Baillargeon, Jay ;
    Woody, Stephen (Sean)
    2022-09-01 | PDF
    The objective of this study was to develop an improved track settlement model using the unique capabilities of the Rainy Section at the FRA’s Transportation Technology Center. Through this research, the interaction of ballast observed from recent laboratory testing [6]. • Post-ballast consolidation and a linear settlement trend are assumed with MGT ...
  • Spike Loading Environment in Various Wood Tie Fastening Systems Research Results
    Spike Loading Environment in Various Wood Tie Fastening Systems [Research Results]
    Baillargeon, Jay ;
    Woody, Stephen (Sean)
    2022-09-01 | PDF
    The Federal Railroad Administration (FRA) contracted with Transportation Technology Center, Inc. (TTCI) to investigate the spike loading environment in various wood-tie fastening systems. The goal was to understand how dynamic loads are transferred to the spikes in wood-tie fastening systems and identify feasible solutions to the spike breakage iss ...
  • Full Moving Block Concept and Requirements Specification for Railroad Operations
    Full Moving Block Concept and Requirements Specification for Railroad Operations
    Khasenye, David ;
    Polivka, Alan
    2022-08-31 | PDF
    In a research project funded by the Federal Railroad Administration (FRA) from May 2020 to September 2022, Transportation Technology Center, Inc. collaborated with a railroad industry technical advisory group (TAG) to develop 1) the concept, 2) the system-level, segment-level, and interface requirements, 3) the migration considerations, and 4) the ...
  • AirBorne Tie Sonar for Loaded Tie Deflection Measurements Research Results
    Air-Borne Tie Sonar for Loaded Tie Deflection Measurements [Research Results]
    Stuart, Cameron ;
    Lanza di Scalea, Francesco
    2022-08-01 | PDF
    This report presents a non-contact ultrasonic technique to map the full-field surface deflection of railroad ties using known concepts of sonar-based distance measurements. Between September 2019 and July 2021, the University of California San Diego (UCSD) created a beam with six sonar sensors and performed field testing at the UCSD Rail Defect Tes ...
  • Automated Track Centerline Following for Drone Flight Automation Research Results
    Automated Track Centerline Following for Drone Flight Automation [Research Results]
    Stuart, Cameron ;
    Doran, Joshua
    2022-08-01 | PDF
    VisioStack Inc. completed initial research to automate drone inspection flights over railroad track using real-time rail detection and track centerline following to simulate flight control without Global Positioning System (GPS) information. Uncrewed Aerial Systems (UAS, or drones) are platforms that may enable more frequent and safer track inspect ...
  • Track Performance in Tunnels and Transitions with Under Tie Pads and Under Ballast Mats Research Results
    Track Performance in Tunnels and Transitions with Under Tie Pads and Under Ballast Mats [Research Results]
    Stuart, Cameron ;
    Riding, Kyle A
    2022-08-01 | PDF
    Railroads have begun to use under tie pads and under ballast mats in rail track construction to better distribute train loads, reduce the track modulus, and increase the tie-to-ballast contact area. Many tunnels, bridges, and track locations with a shallow ballast layer are strong candidates for under tie pads and under ballast mats. This report re ...
  • Leveraging Connected Highway Vehicle Platooning Technology to Improve the Efficiency and Effectiveness of Train Fleeting under Moving Blocks
    Leveraging Connected Highway Vehicle Platooning Technology to Improve the Efficiency and Effectiveness of Train Fleeting under Moving Blocks
    Dick, C. Tyler ;
    Work, Daniel B.
    2022-08-01 | PDF
    Future advanced Positive Train Control systems may allow North American railroads to introduce moving blocks with shorter train headways. This research examines how closely following trains respond to different throttle and brake inputs. Using insights from connected automobile and truck platooning technology, six different following train control ...
121 - 140 / 1162