Yaser Hatamzadeh - PhD Student of Transportation Planning, Department of Civil and Environmental Engineering,Amirkabir University of Technology, Tehran, Iran
Meeghat Habibian - Assistant Professor of Transportation Planning, Department of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran, Iran
Ali Khodaii - Associate Professor of Transportation Engineering, Department of Civil and Environmental Engineering, Amirkabir University of Technology, Tehran, Iran

This research investigated and compared walking behaviors across two job groups with different travel patterns. Individuals in the first group attend/leave their workplace during specific period of time which is usually invariant and makes them more time constraint than the second group who have different travel pattern. Separate behavioral choice models are introduced for trips to work using a range of explanatory variables including individual;household; travel; and environmental variables. Age was found with different effect on walking behavior of the two studied groups. Results show that females are more likely to walk than males in both groups. Also regardless of travel pattern, individual who has a carin his/her household is less motivated to walk to the workplace. Making trips on afternoonwas found as an effective factor on walking mode choice f individuals in the second group.Another significant factor is the travel distance which diversely affects walking in both models. Reasons for differences between the two groups in choosing walking to work are discussed in details in the article.

Active Transportation, Walking, Occupation Category, Travel Pattern, Choice Model