googletag.cmd.push(function() { var gptSlot = googletag.defineSlot(‘/21776187881/FW-Responsive-Main_Content-Slot1’, [[728, 90], [468, 60], [300, 100], [320, 50]], ‘div-gpt-ad-b1-i-fw-ad-4’).defineSizeMapping(gptSizeMaps.banner1).setCollapseEmptyDiv(true).addService(googletag.pubads());
gptAdSlots.push(gptSlot);
});
googletag.cmd.push(function() { googletag.display(‘div-gpt-ad-b1-i-fw-ad-4’); });
A California environmental regulation on diesel-powered truck refrigeration units (TRUs) that is set...