Stability of automobility across lifecycle stages over time

This paper describes how automobility characteristics changed across lifecycle stages within different residential areas over time using statistical analyses. The results confirm that lifecycle is a useful classificatory variable in explaining automobility characteristics. Through analysis of four variances (including lifecycle stage, residential area, time, and age effects), the result suggests that residence area mainly determines the automobile ownership, but household members' age is one of the main explainers for the fraction of auto trips and total auto travel time.