Congestion Maps and Highlight Aerial Photography

  • Congestion Maps & Photos
    There are two types of congestion maps: Bottleneck maps present the findings of the 2007 survey. Congestion is depicted with red and orange arrows, which are linked to associated highlight aerial photographs. Incident Maps are virtually identical, except that red arrows only show locations where incidents have occurred.
  • Map Legends
    This tab opens a separate window that displays symbols used to depict bottlenecks on both map types.
  • Helicopter Highlight Photos
    This page provides a list of Helicopter Highlight Photos by location and is provided as a shortcut to searching the maps.

Navigating the maps

Troubleshooting