I’m sure you guys are right, but this seems to contradict the advice frequently (and consistently) given here: It does NOT make sense to switch off engine when stopped at traffic light (or coasting downhill).
(But maybe your traffic light stops are shorter than here in the DC suburbs, where the local media have recently hyped the news that we have the worst commute in the nation. http://www.wtop.com/654/3218430/Worst-commute-in-the-country-Yours http://www.washingtonpost.com/blogs/dr-gridlock/wp/2013/02/05/new-pti-traffic-delay-index-is-the-pit-of-despair-for-d-c-area-commuters/ For sure, some of my traffic light stops run more than two minutes.)