Did you ever sit in a traffic jam and think “I bet just one idiot on his cell phone up ahead caused this… jerk…”. We all know it’s probably unrealistic, but it’s much easier to blame one person than it is to blame the whole crowd around you. Well… Your inner thoughts may actually be correct. Using cell phone tracking data, thanks to a traffic study by MIT, we have learned a few things about when, why and where traffic jams start, and how they spread out from other areas. It’s not just one singular person, but the data does show that it only takes a select few to send those paved roads into utter chaos.