This coloring page features a classic road sign that reads "Traffic Rules - the main road". The design of the sign has a black background with white text, and the sign itself has a rectangular shape with an arrow pointing to the right as if directing travelers down the main road. To color the sign, I would suggest using bright, bold colors to make it a focal point. For the background, you could use a soft shade of blue or green to create a calming atmosphere. The text could be outlined in yellow or orange to make it really stand out, while the sign itself could have a black outline and be filled with a grey or white color to complete the classic look.