I was getting gas at the Hess station when I saw this 18-wheeler turn onto Pond Street. While the street is a "no heavy truck" road, it is only marked at the Lake Street end in Woburn.
I also recently noticed that the "yeild to pedestrians" sign in the middle of the crosswalk at Chesterford looks like it has been run over.
I suspect that either a truck like this ran over it (as he likely could not have made it around the sign) or one of the really fast cars/trucks took it out. Bottom line is that more needs to be done to calm traffic and enforce existing laws. In this case, a raised crosswalk with center median would do the trick.