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!