The Consorcio IUYET team used a Leica SiTrack reality capture system to obtain point clouds of the surroundings and sub-millimetric railhead measurements. Courtesy Consorcio IUYET. Like most major cities, Mexico City has a traffic problem. But the logjams that cause headaches in other metro areas cause blitzing migraines in Mexico’s capital, where the traffic crisis ranks as the world’s worst . Commutes in Mexico City take an average of 66% longer because of congestion. During rush hours, that figure rises to 96–101%. For drivers, that means 59 extra minutes in traffic . . .