If it feels like your commutes lately have been extra slow.... there are a couple of reasons for it.
#1... November & December for my money are the busiest traffic months of the year.... there's a lot to do during the Holidays... and not much time to get it all done.
#2... Gas Prices have plunged... I paid $3.19 the other day.. so while its easier on the wallet.. there is no question that traffic volume has a behavorial element to it. The Higher the Price of Gas... the less traffic. And the Lower the Price... The MORE.