The term 'blend with traffic' can be solved by four different crossword solutions: MERGE (5 letters), MIX (3 letters), STIR (4 letters), and CONE (4 letters). Merging is the process of combining two or more things into one, while mixing is the process of combining two or more substances together. Stirring is the act of moving a substance around in a circular motion, and coning is the act of forming something into a CONE shape. All of these terms can be used to describe the concept of blending with traffic, which is the act of driving in such a way that you are not noticed by other drivers.