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!