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UPS Inc. will invest an additional $100 million to expand its network of natural gas-powered freight transportation. The expansion will include building 12 more private fueling stations and buying 380 more heavy- duty tractors, the company said.

Starting next year, Pennsylvania no longer will issue vehicle registration stickers for motorists to affix to license plates, state transportation officials announced.

Fleets have ramped up their investments in trailer aerodynamics systems in recent years to improve fuel economy, and federal regulations are expected to drive further adoption, a new report found.

Carriers now are deploying a variety of onboard sensors that can tell them if a trailer is loaded or empty, when its doors open, the temperature of its cargo or if a pallet moves.

DALLAS — Electronic driver logs can streamline fleets’ business processes and improve hours-of-service compliance, but driver outreach is key for a successful rollout, trucking executives said.

Advances in technology are giving trucking companies increasingly sophisticated ways to combat distracted and drowsy driving — two of the biggest threats to fleet safety.

The parent company of Total Transportation Services Inc. filed voluntarily for Chapter 11 reorganization bankruptcy in federal court in Delaware, citing legal difficulties relating to independent contractors and the California Labor Commissioner.