Abstract
This article aims at measuring the sustainability of the streets of Khartoum using the Pedestrian Environmental Quality Index (P.E.Q.I.). This index has six categories: Intersection safety; traffic; street design; perceived safety; land use; and perceived walkability. Each category has several items. As a case study, Mohammed Najeeb main street is studied since it represents main streets in Khartoum. Results show that the sustainability standard of the studied street is below average (40%). Conclusions are written. And recommendations are drawn.