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