AMES, Iowa – Jan. 6, 2015 – The combination of light, blowing snow and cold surface temperatures could result in icy roadways due to a phenomenon called wheel-track glazing. “Wheel-track glazing” is caused by warm tires trapping the ground-level light, blowing snow. As more vehicles travel over the same wheel tracks, a glaze of ice forms that becomes very slippery. The condition is very difficult for Iowa Department of Transportation crews to treat because the ice is continuously forming on heavily traveled roadways.
Saving lives and preventing the risk of serious injury under these conditions requires:
See the Iowa DOT’s website www.iowadot.gov/maintenance/wheeltrackglazing.html to learn more about the formation of the roadway glaze and its consequences.
Increased driving risk
For drivers, the consequences of wheel-track glazing can be serious; stopping distances are 10 times greater than on dry pavement and double that of packed snow.
Here are some tips for driving on icy roads, when travel is necessary. Postpone your trip if possible.
To discover all the ways in which you can receive around-the-clock Iowa traveler information, visit 511ia.org.
For media access to an Iowa DOT Highway Division spokesperson during this winter event, call 515-233-7960.