Charles Bukowski wrote, "When I drive the freeways, I see the soul of humanity of my city and it's ugly, ugly, ugly." The unwritten rule of freeway driving is to drive aggressively. Traditional defensive driving is not enough. To signal before a lane change is to guarantee the car behind you will not let you in. The trick is to quickly change lanes then hit your turn signal as if to say, "That's right man, I just cut you off."
The above woodcut print is by LA artist Loren Kantor (previously on L.A. Taco), who shares some insight into his process: "Here is a scan (below) of the carved linoleum block. As you can see, all the text in the freeway signs had to be carved backwards.Once carved, the block was mounted to a wood backing and then hand-pressed."
View more about this woodcut, and many others, at woodcuttingfool.blogspot.com.