In mid-1970s I had a summer job pumping gas at Old Colony Gas Station located at the north end of Park Ave, across the street from the City bus garage. This was a summer of gas lines and was before self-serve pumps were invented. I worked 3 p.m. to 11 p.m. shift by myself, and I kept four hoses pumping. This summer there were only 1 or 2 other gas stations open in Worcester after 5 p.m., and business didn't slow down for me until after 9 p.m. Drivers often asked for directions to destinations deeper into the City, and their route usually was along Park Ave, so to facilitate giving directions I wrote a list of traffic signal intersections on Park Ave and numbered them. At a glance I could tell them how many lights to count driving down Park Ave. The only tricky signal was the flashing light at the awning company -- whether or not to count that as a traffic signal.