 Main Roads Western Australia and the Department of Planning , Transport and Infrastructure in South Australia monitor traffic volume across the states ' road networks , including various locations along Eyre Highway . In Western Australia , the recorded traffic volumes ranged between 430 and 760 vehicles per day in 2013 / 14 . In South Australia , the estimated annual average daily traffic as of September 2015 varied between 500 and 1500 west of Lincoln Highway , and was 2700 to the east . 
