Inside Traffic Counts
[ I-95 N & S November, 2001 ] [ I-95 N November, 2001 ] [ I-95 S November, 2001 ] [ I-95 N & S Full-year, 2001 ] [ I-95 N Full-year, 2001 ] [ I-95 S Full-year, 2001 ] [ Maine Mall Rd Full-year 2001 ]

JOHO Traffic Count Images

The Maine Department of Transportation operates a network of about 70 traffic count and classification sites around the state. The link will take you to their map of Maine where you can see the locations of the sensors and can learn how MDOT has integrated JOHO into their web site. JOHO generates and updates all of the images on their site with a single script that the analyst runs each time he downloads the counts from the sensors.

The images here show the result of grouping all vehicles counted by the sensor together in a single total for each hour. We illustrate the traffic patterns at an Interstate 95 site, including the difference between directions. We also show an image of traffic on a busy road near a shopping mall to show a very different daily and seasonal traffic pattern.

MDOT uses images like these to monitor the sensors, to understand traffic patterns that are not adequately described by statistical models, and to schedule maintenance operations that will affect traffic flow on busy roads. Because traffic count information is one of the most requested items for MDOT, they hope to make such information available to the public in a more effective and timely manner through their web site.

We recommend that you begin your tour of JOHO images with these traffic count images. The images and accompanying text provide a good introduction to JOHO's concepts and the details of the layout of the other traffic images.  

  I-95 N & S November, 2001

  I-95 N & S Full Year, 2001

  Maine Mall Road Full Year, 2001