不只几天一次！光是美国铁路道口事故，每天好几次！可以进来看看这个表：

All Highway-Rail Incidents at Public and Private Crossings, 1981-2013
Source: Federal Railroad Administration

Year Collisions Fatalities Injuries
1981 9,461 728 3,293
1982 7,932 607 2,637
1983 7,305 575 2,623
1984 7,456 649 2,910
1985 7,073 582 2,687
1986 6,513 616 2,458
1987 6,426 624 2,429
1988 6,617 689 2,589
1989 6,526 801 2,868
1990 5,715 698 2,407
1991 5,388 608 2,094
1992 4,910 579 1,975
1993 4,892 626 1,837
1994 4,979 615 1,961
1995 4,633 579 1,894
1996 4,257 488 1,610
1997 3,865 461 1,540
1998 3,508 431 1,303
1999 3,489 402 1,396
2000 3,502 425 1,219
2001 3,237 421 1,157
2002 3,077 357 999
2003 2,977 334 1,035
2004 3,077 372 1,092
2005 3,057 359 1,051
2006 2,936 369 1,070
2007 2,776 339 1,062
2008 2,429 290 992
2009 1,934 249 743
2010 2,051 260 887
2011 2,059 250 1,041
2012* 1,971 232 944
2013* 2,087 251 929
* Preliminary statistics