Capacity in the flatbed sector staying tight, firm says, while trucks more available in the dry van and reefer markets.
As the truck driver shortage grows, aging workforce and cost of finding parking becoming bigger problems.
University asks EPA to withdraw its research on glider kits.
Slight price uptick for diesel in California, gasoline in Midwest, EIA data shows.
Most engines and electronic transmissions used by truckers are included in code library, firm says.
Several headwinds are affecting new vehicle sales, research firm says.
Council of Economic Advisors says "heavy trucks in particular do not currently face taxes and charges that are aligned with the negative externalities they generate."
Truckstop chain continues to add new facilities as part of its 2018 expansion plan.
Spot rates remain above 2017 levels and truck capacity remains tight.