Gridlock Sam Traffic Conundrums Author:Sam Schwartz The mystery of traffic in New York City has been solved!! Critics say more complex than the Da Vinci Code, Gridlock Sam has broken Da Traffic Code! When can you double park? What is the statute of limitations on a ticket? How can you get unhooked from an NYPD tow truck? Learn the 'whens,' 'wheres,' 'why's' and, most importantly, 'how's' of traffic.