Prohibitive Signs: Use the color red for regulatory signs as a background color to denote restriction and as a circular outline and diagonal bar a prohibitory symbol.

R1-1           R1-2          R1-3-2         R1-3-3

  R1-3-4          R1-4          R3-1            R3-1P

   R3-2         R3-2P            R3-4            R3-4P

    R5-1         R5-1A          R5-2            R5-2P 

   R5-6         R5-6P          R8-3A         R8-3AP

 

   R8-3AP          R9-3           R9-3A