Earnings were weak as truckers continue to drive through a soft patch.A miserable earnings season for the trucking sector continued on Tuesday with results from ArcBest (ARCB -12.89%). Shares of the Arkansas-based transportation and logistics provider traded down 13% as of 2:30 p.m. ET following the release of its quarterly earnings report.A cool climate for demandArcBest investors were likely fearing the worst, ahead of the company's earnings release. A number of trucking stocks that have already reported, ...