A history of urban travel demand modeling (UTDM) and its enormous influence on American life from the 1920s to the present.For better and worse, the automobile has been an integral part of the American way of life for decades. Its ascendance would have been far less spectacular, however, had engineers and planners not devised urban travel demand modeling (UTDM). This book tells the story of this irreplaceable engineering tool that has helped cities accommodate continuous rise in traffic from the 1950s onBeginning with UTDM’s origins as a method to help plan new infrastructure, Konstantinos Chatzis follows its trajectory through new generations of models that helped make optimal use of existing capacity and examines related policy instruments, including the recent use of intelligent transportation systems.Chatzis investigates these models as evolving entities involving humans and nonhumans that were shaped through a specific production processIn surveying the various generations of UTDM