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