2011. California. Department of Transportation. This line shapefile represents traffic bottlenecks, or heavy congestion during peak a.m. and p.m. travel periods, on California's State Highway sys... California. Department of Transportation.
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2011. Alexander, Binoy and California. Department of Transportation. This point shapefile contains annual average daily truck traffic volume (also known as traffic counts) on California's state highway network for 20... California. Department of Transportation.
