Talk:double crossover

different crossover types

I believe our definition here is incorrect, or of a rare usage. In the rest of the railroading world, a double crossover is two separate but adjacent single crossovers which do not overlap to form an "X". A crossover which does so overlap is often called a scissors crossover or diamond crossover. See w:crossover (rail).

A picture being worth the proverbal thousand words, here's my interpretation:

      ===**===========**===        ====**==**====
          \\         //                 \\//
           \\       //                   XX
            \\     //                   //\\
      =======**===**=======        ====**==**====
        double crossover           scissors crossover,
                                   diamond crossover

—scs 17:52, 19 November 2006 (UTC)

Thank you for the comment and the great ASCII-art pictures. I fixed the definitions a bit (only 13 years later) ... now:

• "scissors crossover" = "diamond crossover"
• "scissors crossover" and "diamond crossover" are hyponymes to "double crossover"

Further comments appreciated. Taylor 49 (talk) 10:46, 14 August 2019 (UTC)