The difference between these crossing types is most noticeable at low pedestrian flows and where there are also low vehicle flows, as shown in the chart (for medium vehicular flow). At low pedestrian flows, the vehicular capacity is highest with a zebra crossing. In this region, if a signalised crossing is being used, a puffin will give better performance than a pelican. At higher pedestrian flows, using any sort of signalised crossing is the best option, and the difference between a pelican and puffin becomes negligible. Of course, there are many other considerations such as safety and layout options.