Road marking using optical illusion

Abstract

Disclosed is a surface sign that is seen by the driver as raised vertically improving the readability by the driver, and as for the surface signs with an optical illusion effect that can aid the driver in driving safely due to the tendency of being able to capture the gaze of the driver printing onto the road surface creating surface signs that provides information to a far off above driver using copy or shapes, from the standard distance between the above driver and the above surface sign, where the roadside prints are formed longer than the wayside prints for random waysides and roadsides reflected at the same distances form in the periphery of the above driver, and the surface of the road is painted in order for the two nearby roadsides to form a mutually acute angle.

What is claimed is: 
     
         1 . A method for printing road surface signs, comprising:
 printing the road surface signs such that the road surface signs are printed within an imaginary trapezoid having a bottom side, a top side, a left side, a right side and a height,
 wherein the imaginary trapezoid is an inverse isosceles trapezoid when it is seen by traffic, of which a length of the top side (S) is greater than a length of the bottom side, and 
 the height of the trapezoid corresponds to a total length (Y) of the road surface sings and is calculated by 
   
       
         
           
             
               
                 Y 
                 = 
                 
                   
                     B 
                     A 
                   
                    
                   X 
                 
               
               , 
             
           
         
       
       where ‘A’ is an eye level of a driver, ‘B’ is an elevation difference between the top side and the bottom side which are reflected to the driver, and ‘X’ is a distance between the driver and the road surface signs; and
 printing parts of the road surface sings such that a part of the road surface sings having a first length is printed with the first length in a bottom portion of the trapezoid and with a second length (y) in a top portion of the trapezoid, the second length (y) being greater than the first length, and the second length (y) is calculated by 
 
       
         
           
             
               
                 y 
                 = 
                 
                   
                     
                       X 
                       - 
                       Y 
                     
                     
                       A 
                       - 
                       b 
                     
                   
                    
                   b 
                 
               
               , 
             
           
         
       
       where ‘b’ is a random elevation difference selected within ‘A’; and printing the road surface sings such that a part of the road surface sings having a first width is printed with the first width (s1) in the bottom portion of the trapezoid and with a second width (s2) in the top portion of the trapezoid, the second width (s2) being greater than the first width (s1), and the second width (s2) is calculated by 
       
         
           
             
               
                 
                   s 
                    
                   
                       
                   
                    
                   2 
                 
                 = 
                 
                   
                     X 
                     
                       X 
                       - 
                       Y 
                     
                   
                    
                   s 
                    
                   
                       
                   
                    
                   1 
                 
               
               , 
             
           
         
       
       where ‘s1’ is the first width of the part of the road surface sings. 
     
     
         2 . The method for printing road surface signs as  claim 1 ,
 wherein each of imaginary extension lines of the left side and the right side of the trapezoid forms an acute angle of θ with an imaginary extension line of a center axis of the trapezoid, and the acute angle (θ) is calculated by   
       
         
           
             
               
                 θ 
                 = 
                 
                   tan 
                   - 
                   
                     1 
                      
                     
                       
                         S 
                         2 
                       
                       X 
                     
                   
                 
               
               , 
             
           
         
       
       where ‘S’ is the length of the top side of the trapezoid. 
     
     
         3 . The method for printing road surface signs as  claim 1 , wherein the length of the top side (S) of the trapezoid is about 1.43 times greater than a length of the bottom side of the trapezoid. 
     
     
         4 . The method for printing road surface signs as  claim 3 , wherein the second length (y) is about 1.7 times greater than the first length.