Caltrans GIS Data

Bottlenecks 2010 Bottlenecks 2010 (Zoom-in)

Bottlenecks for AM and PM Peak Periods

As a part of the Mobility Performance Report (MPR), the bottlenecks shapefile represents line segments of heavy congestion during peak AM and PM periods prepared by California Department of Transportation, derived from the HQ Traffic Operations Asset Management Branch. (2010, 2011, 2012, 2013).

Data Created: July 31, 2013
Last Modified: September 12, 2016


The Mobility Performance Report (MPR) is prepared by California Department of Transportation (Caltrans) and district staff providing detailed data about highway system performance related to congestion and mobility. Caltrans collects vehicle counts and calculates speeds at all hours of the day and all days of the week in major metropolitan areas throughout California via the Caltrans Performance Measurement System. This information helps identify congestion bottlenecks and results in more cost-effective investments to improve performance of the State Highway System.


The maps and data are made available to the public solely for informational purposes. Information provided in the Caltrans GIS Data Library is accurate to the best of our knowledge and is subject to change on a regular basis, without notice. While the GIS Data Management Branch makes every effort to provide useful and accurate information, we do not warrant the information to be authoritative, complete, factual, or timely. Information is provided on an "as is" and an "as available" basis. The Department of Transportation is not liable to any party for any cost or damages, including any direct, indirect, special, incidental, or consequential damages, arising out of or in connection with the access or use of, or the inability to access or use, the Site or any of the Materials or Services described herein.


Tags: Bottleneck, 2010, 2011, 2012, 2013 Traffic Congestion, Mobility Performance Report (MPR), California
Credits: California Department of Transportation, Office of Performance, Division of Traffic Operations, Traffic Data Branch & Asset Management Branch
Files: 2010 Bottlenecks:, size 0.336 MB
2011 Bottlenecks:, size 0.487 MB
2012 Bottlenecks:, size 0.499 MB
2013 Bottlenecks:, size 0.617 MB
Extent: California statewide


Mobility Performance Reporting and Analysis Program: