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