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HSIS

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Illinois

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Available data:

  •     Crash
  •     Roadway Inventory
  •     Traffic Volume
  •     Curve and Grade
  •     Interchange/Ramp
     
  •     Years Of Data Available:  1985-2010
  •     Average Crashes/Year:  144,000
  •     Roadway Mileage:  17,300

 

North Carolina

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Available data:

  •     Crash
  •     Roadway Inventory
  •     Traffic Volume
     
  •     Years Of Data Available:  1990-2018
  •     Average Crashes/Year:  112,000
  •     Roadway Mileage:  64,400

 

California

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Available data:

  •     Crash
  •     Roadway Inventory
  •     Traffic Volume
  •     Intersection
  •     Interchange/Ramp
  •     Years Of Data Available:  1991-2017
  •     Average Crashes/Year:  171,000
  •     Roadway Mileage:  15,400