Are there any quality standards the DEF must meet?CCJ Staff (CCJ)Aug 12, 2014Updated Aug 28, 2014 Yes, DEF needs to meet the ISO 22241 quality standard. Add us as a preferred source on Google Top StoriesAutonomousRail companies wary of trucking's adoption of autonomous trucksUnion Pacific and Norfolk Southern argue their merger is vital to survive the "intensifying" threat of driverless trucks and autonomous vehicle technology.AutonomousAurora, Detmar Logistics partner for autonomous frac sand haulingCCJ Top 250Holiday spirits: Averitt adding tanker operation for bourbon clientsEconomic trendsGradual recovery ahead, but full rebound remains elusiveSafety & ComplianceMarijuana rescheduling won't affect DOT drug testing rules, agency saysGet all the info on the top 250 trucking companies in AmericaView, sort and download the trucking industry’s most comprehensive ranking of for-hire carriers in North America, based on a blend of metrics including fleet size, annual revenue and number of drivers.White PapersFullbay's Guide To Boosting Tech Efficiency