How Tires Affect Fuel Economy Testing
When setting out to evaluate a fuel-saving product, you don't want your numbers skewed by differences in rolling resistance from the tires. With some fuel-savin...
Driving A SuperTruck
The SuperTruck lives up to its name as a groundbreaking technology demonstration project that is also fun to drive.
Medium-Duty Tires Go Fuel-Efficient
The factors driving tire design for medium-duty trucks has changed. Today, tire makers must balance fuel efficiency and bulletproof durability to stand up to a ...
Test Drive: Cummins-Eaton Powertrain Smooth as Silk
Cummins and Eaton may have finally nailed it with their SmartAdvantage Powertrain combo, reports Equipment Editor Jim Park in July's Test Drive. The SmartAdvant...
Trucking Lost Faith in Anne Ferro -- But Replacement Could Be Worse
Trucker-turned-editor Jim Park gives his perspective of Anne Ferro's tenure as chief of the Federal Motor Carrier Safety Administration -- and some chilling tho...
The Benefits of Low-Rolling-Resistance Tires Explained
There's little doubt left that tires formulated for lower rolling resistance work as advertised, but it's still tough to give up at few thousandths of an inch o...
NTSB Spreads the Skagit Bridge Blame, Soft-pedals the Real Problem
There is no excuse whatsoever for a driver striking a low bridge if the obstruction is accurately marked. That obviously wasn't the case with the Skagit River B...
Has the U.S. SmartWay Program Helped Retreading?
With regulations affecting how fleets fit their wheels, the retreading industry is still deciding whether or not the inclusion of verified low-rolling-resistanc...
Nitrogen Tire Inflation: Still in the Game?
We don't hear much these days about nitrogen tire inflation systems for heavy trucks. They are still out there, and some users are reporting good results from t...
The Peterbilt-Cummins SuperTruck, Part 2: More Secrets Revealed
The Peterbilt-Cummins SuperTruck project achieved almost-unheard-of gains of 68% in freight efficiency over a 24-hour duty-cycle, a 50% improvement in freight e...