What factor is not a consideration when identifying points of greatest potential congestion?

In the context of identifying points of greatest potential congestion, the speed of the roadway is not a primary consideration compared to the other factors listed.

When analyzing congestion, traffic volume is crucial because higher numbers of vehicles can lead to increased likelihood of bottlenecks. Road layout also significantly impacts how traffic flows; intersections, curves, and lane configurations can either facilitate or hinder movement. Weather conditions play a role as well, since adverse weather can lead to reduced visibility or traction, causing drivers to slow down and potentially create delays.

While the speed of the roadway can influence travel times, it does not directly correlate with congestion points in the same way that traffic volume, road layout, and weather do. These other factors create immediate impacts on how traffic behaves, whereas speed is a consequence of those behaviors rather than a direct cause of congestion.