It is the third quarter in a row of increased churn in the driver market.
The turnover rate for drivers at large truckload fleets rose four basis points from the first quarter's rate of 75%, pushing the rate to its highest point since the second quarter of 2008.
"Even though the increase was small, we still believe the market for quality drivers is getting extremely tight and fleets are aggressively recruiting to fill their openings," said ATA Chief Economist Bob Costello.
The slowdown of the economic recovery has affected the turnover rate, he said. However, if the economy continues to improve we'll see further tightening in the driver market and a renewed risk of a severe driver shortage.
Turnover at small truckload companies and less-than-truckload fleets actually fell in the quarter, dropping to 47% from 50% for small TL firms and to 6% from 8% for LTLs.