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