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