"This primarily keeps track of Player and Banker wins. Tie and pair wins are also noted with slashes and dots. To be specific, a tie is noted with a green line through the previous Player or Banker win. A Player pair is noted with a blue dot in the lower right corner of the hand it occurred in. A Banker pair with a red dot in upper left. In the interest of simplicity, in this example there were only Player and Banker wins. Much like in the Bead Plate, the player starts in the upper left, as well as marking Player wins in blue, and Banker wins in red. However, instead of a solid circle, with a Chinese character in the middle, the Big Road has only the blue and red outlines of circles.
Unlike the Bead Plate, in the Big Road the player starts at the top of a new column with each change in Player and Banker winning. Note the grid is six rows deep. In the event there are seven or more consecutive Player or Banker wins, the results will move to the right, creating what is known as a dragon tail. In this example that never happens, as there was never more than four consecutive wins on the same side. " (text source: wizardofodds.com)