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#GOOGLE EARTH FOR MAC ADDONS HOW TO#
#GOOGLE EARTH FOR MAC ADDONS PC#

Back AADT, Peak Month, and Peak Hour usually represents traffic South or West of the count location.

This handy Caltrans webpage provides us with some important definitions.

And according to Google maps, Highland Avenue is 4 minutes or 1.6 miles away from North Crescent Heights. Looking at the data look first at the Route, then the County, and then the nearest post mile.įor our example, I’d want to double check that Highland Avenue is close to North Crescent Heights.

Here’s the 2012 traffic counts that we can use as an example.

The department will release 20 traffic data as soon as it’s available, but for my purposes, 2012 is the best data available & will work. The most current data that I could find was 2012.

Download the most current traffic volume data from the Caltrans Traffic Data Branch.

#GOOGLE EARTH FOR MAC ADDONS HOW TO#

How to Use the Postmile to look up Traffic Counts The map will then show you the closest County Postmile.ī.(You can turn on the Roads in the left navigation to see the street names). So in my example, I’m clicking on the intersection of Santa Monica (2) & North Crescent Heights. WithClick selected in the Postmile look up tool, click on the map where your area of interest is.I’m going to use Santa Monica (Route 2) and North Crescent Heights in Los Angeles County as an example. The intersecting street can be a smaller road or it can also be another state highway. Note: since the data are state highways, your area of interest will likely be a state highway AND an intersecting street.Once you get the Caltrans Earth working, enter your area of interest to zoom to location.

#GOOGLE EARTH FOR MAC ADDONS PC#

If you are running a PC, you’ll need to find the PC plug-in. So I searched for “GoogleEarth-Mac-Plugin-Latest.dmg” and found this site with the Mac version of the Google Earth Plugin.

Clicking on the download plugin link provided by Caltrans didn’t work for me. You will probably have to download the Earth for Web plugin.Go to Caltrans Earth – which is a GIS provided by the California Department of Transportation.The postmile markers indicate the distance a route travels through individual counties, as opposed to mile markers that indicate the distance traveled through a state.” You should care about Postmiles, because you need to know the postmile to look up the traffic count data. Wikipedia says “California uses a postmile highway location marker system on all of its state highways, including U.S. What’s a Postmile(& Why Should You Care)?

Here’s how I got traffic count data for this California state highway. This owner wanted California traffic count data for the highway near the potential location. I was working on a custom data request for a new business owner who was considering a particular location for a new venture.