and under the influence of engineering codes that emphasized speed and traffic flow over safety, resulting in the street becoming a stroad. Other stroads were created when developers began adding private accessways onto roads. As the number of accessways increased, so did congestion and collisions on the road, requiring traffic control additions such as traffic signals.

Dutch urban planner Willem Zurborg argues that this conversion of streets and roads into stroads was a consequence of local governments designing their roadways to serve