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!