 The Ohio Department of Transportation ( ODOT ) regularly does surveys to determine the amount of traffic that utilizes its highway system . Commonly , the volumes measured in these surveys are expressed in terms average annual daily traffic ( AADT ) , or the amount of traffic volume on a given segment of a highway on any average day of the year . In 2010 , ODOT determined that an average of 340 passenger vehicles per day and 20 commercial vehicles per day used SR 372 . This state route is not a part of the National Highway System , a network of roadways identified as being most important for the economy , mobility and defense of the nation . 
