Discrete choice models are important tools for analysis of individual choice behavior and have been applied in diverse fields, including transport, marketing, economics, environment and so on. This book begins with discussions about basic concepts and theory underlying the econometrics of discrete choice, commonly used models, model building and tests, and applications of choice models. The third chapter categorizes different sources of errors due to the use of network-based level of service (LOS) attributes in disaggregate travel demand modeling. The fourth chapter investigates the errors in variables problem in multinomial choice modeling with an example of logit model of mode choice. The fifth chapter explores the sensitivity of model results to specification of network-based LOS attributes. The sixth chapter addresses the problems of intrazonal trips in mode choice modeling. The seventh chapter extends the analyses using the mixed logit model. I believe that the book will be useful to students, researchers and practitioners in the field of choice modeling generally and travel demand modeling particularly.