&.&.&.....                                          &.&.&&..&.
&&&&&&....                                          .&&&&.&.&&
......&...                                          .&...&&&&.
......&&..                                          .&&..&...&
&.....&.&.                                          .&.&.&&..&
.&....&&&&                  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!         &...&&..&&
&&&&.&.&..                                          &&..&.&.&.
&...&&&&&.                                          ..&.&&&&&&
.&..&....&                                          &.&&&.....
.&&.&&...&                                          &&&..&....
.&.&&.&..&                                          &..&.&&...
.&&&.&&&.&                                          .&.&&&.&..