Changes

Most railroad fatalities occur at crossings or involve trespassers, rather than  passengers.  In 2007, 851 people died in railroad-related incidents in the United States.<ref name="FRA statistics" />  Of these, 5 were passengers, 470 were trespassers, and 338 were vehicle occupants or pedestrians at railroad crossings.

Most railroad fatalities occur at crossings or involve trespassers, rather than  passengers.  In 2007, 851 people died in railroad-related incidents in the United States.<ref name="FRA statistics" />  Of these, 5 were passengers, 470 were trespassers, and 338 were vehicle occupants or pedestrians at railroad crossings.

Some railroad-crossing collisions occur when a [[motor vehicle]] begins to cross railroad tracks while other vehicles are stopped ahead.  In order to prevent such accidents, some traffic signals may be designed to provide "[a] special sequence of signal phases and timing to provide additional clearance time for vehicles to clear the tracks prior to the arrival of a train"<ref name="4D13">''Manual on Uniform Traffic Control Devices'', [http://mutcd.fhwa.dot.gov/htm/2003r1r2/part4/part4d.htm#section4D13 chapter 4D].</ref><ref name="8D07">''See also'' ''Manual on Uniform Traffic Control Devices'', [http://mutcd.fhwa.dot.gov/htm/2003r1r2/part8/part8d.htm#section8D07 chapter 8D].</ref>; however, such designs are not mandatory.  It is the driver's sole responsibility never to start to cross any railroad tracks until it is certain that both the tracks and the roadway beyond are clear.<ref>''See, e.g.'' [http://mva.state.md.us/Resources/DL-002B.pdf ''Maryland Driver's Handbook''], page 103 (page 53 of online edition).</ref>

Some railroad-crossing collisions occur when a [[car|motor vehicle]] begins to cross railroad tracks while other vehicles are stopped ahead.  In order to prevent such accidents, some traffic signals may be designed to provide "[a] special sequence of signal phases and timing to provide additional clearance time for vehicles to clear the tracks prior to the arrival of a train"<ref name="4D13">''Manual on Uniform Traffic Control Devices'', [http://mutcd.fhwa.dot.gov/htm/2003r1r2/part4/part4d.htm#section4D13 chapter 4D].</ref><ref name="8D07">''See also'' ''Manual on Uniform Traffic Control Devices'', [http://mutcd.fhwa.dot.gov/htm/2003r1r2/part8/part8d.htm#section8D07 chapter 8D].</ref>; however, such designs are not mandatory.  It is the driver's sole responsibility never to start to cross any railroad tracks until it is certain that both the tracks and the roadway beyond are clear.<ref>''See, e.g.'' [http://mva.state.md.us/Resources/DL-002B.pdf ''Maryland Driver's Handbook''], page 103 (page 53 of online edition).</ref>

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