Generally, it is widely accepted that transport accessibility is one of important factors
and transport plays a crucial role in the location selection of warehouses. A group of variables
is used to explore the effect of accessibility to various transportation modes like
highways, ports and airports in the Istanbul metropolitan area. In Istanbul, two transportation
axes, namely TEM (E80) and E5 (D100) highways, have importance for the location
selection of warehouses. As stated before, while E5 (D100) has transformed into an intracity
road character over time, TEM (E80) still continues to be used as a highway.
However, the effect of two transport axes is not unknown. In the study, their effects are
tested. Also, it is considered that three ports (Tuzla Port, Ambarlı Port and Zeytinburnu
Port) have importance for the location selection.