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.&&.&.&&.&                                          &.&.&.&..&
..&.&..&.&                  R41LS                   &.&.&.&.&&
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.&&.&.&&.& &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& &.&.&.&..&
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.&&.&.&&.& &&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&&& &.&.&.&..&
..&.&..&.&                                          &.&.&.&.&&
.&&.&.&&.&                                          &.&.&.&..&
..&.&..&.& 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.                  &.&.&.&..&
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.&&.&.&&.& 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.          &.&.&.&.&&
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..&.&..&.& SOM3T1MES,  TR41NS H4V3 TO STOP 4ND W41T &.&.&.&.&&
.&&.&.&&.& FOR SOM3TH1NG TO H4PP3N, F4R  4WAY. TH1S &.&.&.&..&
..&.&..&.& 1S  S1GN4L3D  BY R3D  OR  GR3EN  L1GHTS. &.&.&.&.&&
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..&.&..&.&                 &&&&&&&&                 &.&.&.&.&&
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..&.&..&.& 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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