#@&%^^~^,,                                          ,,^~^^%&@#
##@&%^^~^,                                          ,^~^^%&@##
#@&%^^~^,,                                          ,,^~^^%&@#
@&%^^~^,,,                                          ,,,^~^^%&@
&%^^~^,,,,                                          ,,,,^~^^%&
%^^~^,,,,,                   R41LS                  ,,,,,^~^^%
^^~^,,,,,,                                          ,,,,,,^~^^
^~^,,,,,,,                                          ,,,,,,,^~^
~^,,,,,,,, &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& ,,,,,,,,^~
^~^,,,,,,,                                          ,,,,,,,^~^
^^~^,,,,,, &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& ,,,,,,^~^^
%^^~^,,,,,                                          ,,,,,^~^^%
&%^^~^,,,,                                          ,,,,^~^^%&
@&%^^~^,,, TR41NS  4R3  SO  CONSTRUCT3D  TH4T  TH3Y ,,,^~^^%&@
#@&%^^~^,, H4V3 TO FOLLOW 4 S3T P4TH. TH1S  P4TH 1S ,,^~^^%&@#
##@&%^^~^, C4LL3D 4 "R41LWAY",  WH1CH  1S COMPR1S3D ,^~^^%&@##
#@&%^^~^,, OF TWO  M3T4L R41LS, H3NCE 1TS N1CKN4M3. ,,^~^^%&@#
@&%^^~^,,,                                          ,,,^~^^%&@
&%^^~^,,,, B3C4USE  TH3 LOW  FR1CTION  B3TWEEN  TH3 ,,,,^~^^%&
%^^~^,,,,, WH3ELS OF TH3 TR41N 4ND TH3  R41L M3T4L, ,,,,,^~^^%
^^~^,,,,,, TH3RE 4R3 L1MITS FOR HOW  4CUT3 4  CURV3 ,,,,,,^~^^
^~^,,,,,,, C4N B3,  4ND 3VEN MOR3 SO  FOR HOW  MUCH ,,,,,,,^~^
~^,,,,,,,, TH3  GROUND  UND3R   TH3  R41LS  C4N  B3 ,,,,,,,,^~
^~^,,,,,,, SLOP3D. THUS 4 R41LWAY  1S OFT3N NOT L3D ,,,,,,,^~^
^^~^,,,,,, ON TOP OF  H1LLS, R4TH3R THROUGH TH3M 1N ,,,,,,^~^^
%^^~^,,,,, TUNN3LS   (1F   TH3Y  4R3   L4RG3),   OR ,,,,,^~^^%
&%^^~^,,,,            4RT1FICIAL CH4SMS.            ,,,,^~^^%&
@&%^^~^,,,                                          ,,,^~^^%&@
#@&%^^~^,, TH3RE W1LL B3  TR3ES ON TH3 S1D3  OF TH3 ,,^~^^%&@#
##@&%^^~^, R41LS,  BUT NOT  TOO CLOS3, OR TH3Y W1LL ,^~^^%&@##
#@&%^^~^,, B3  CUT DOWN BY  TH3  R41LWAY  J4N1TORS. ,,^~^^%&@#
@&%^^~^,,, TH3RE  W1LL  B3  PL41NS, 4ND  BOD13S  OF ,,,^~^^%&@
&%^^~^,,,,                  W4T3R.                  ,,,,^~^^%&
%^^~^,,,,,                                          ,,,,,^~^^%
^^~^,,,,,, TR41NS GO BY  D4Y  4ND BY  N1GHT.  4LONG ,,,,,,^~^^
^~^,,,,,,,       TH3 W4Y, TH3RE 1S 1NFORM4TION      ,,,,,,,^~^
~^,,,,,,,, SC4TT3RED, OFT3N PUT  ON TOP  OF  POL3S, ,,,,,,,,^~
^~^,,,,,,, TO B3 1NT3RPRETED BY TH3 TR41N  DR1V3RS. ,,,,,,,^~^
^^~^,,,,,, D1FF3RENT  P4RTS  OF  TH3  R41LWAY  H4V3 ,,,,,,^~^^
%^^~^,,,,,         D1FF3RENT SP3ED L1MITS.          ,,,,,^~^^%
&%^^~^,,,,                                          ,,,,^~^^%&
@&%^^~^,,, SOM3T1MES, TR41NS H4V3 TO STOP 4ND  W41T ,,,^~^^%&@
#@&%^^~^,, FOR SOM3TH1NG TO H4PP3N, F4R  4WAY. TH1S ,,^~^^%&@#
##@&%^^~^, 1S  S1GN4L3D BY  R3D  OR  GR3EN  L1GHTS. ,^~^^%&@##
#@&%^^~^,,                                          ,,^~^^%&@#
@&%^^~^,,,                 &&&&&&&&                 ,,,^~^^%&@
&%^^~^,,,,                                          ,,,,^~^^%&
%^^~^,,,,, M4NY P3OPLE FOLLOW  TH3 R41LS  BY  FOOT. ,,,,,^~^^%
^^~^,,,,,, OFT3N  TH1S PROV3S  TO  B3  TH3  SHORT3R ,,,,,,^~^^
^~^,,,,,,, P4TH B3TWEEN  TWO  PO1NTS.  HOW3VER TH1S ,,,,,,,^~^
~^,,,,,,,, 1S  FROWN3D   UPON,  4ND  V3RY  1MPOLIT3 ,,,,,,,,^~
^~^,,,,,,,        TOW4RD TH3 TR41N DR1V3RS!         ,,,,,,,^~^
^^~^,,,,,,                                          ,,,,,,^~^^
%^^~^,,,,,                                          ,,,,,^~^^%
&%^^~^,,,,                                          ,,,,^~^^%&
@&%^^~^,,,                                          ,,,^~^^%&@
#@&%^^~^,,                                          ,,^~^^%&@#
##@&%^^~^,                                          ,^~^^%&@##