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WASHINGTON — Members of the Transportation Research Board’s Truck Size and Weight Committee said they continue to face stiff headwinds to garner public and political support for heavier and longer trucks, despite evidence that demonstrates the potential for reducing carbon emissions and increasing cargo efficiency.

Colorado moved to boost electric-car sales by taking the first step toward adopting a zero-emission-vehicle mandate patterned after one in California that’s under threat from the Trump administration.

LAS VEGAS — Nikola Motor Co. founder and CEO Trevor Milton said two key customers — private fleet Anheuser-Busch Cos. and truckload carrier U.S. Xpress Enterprises — will begin fleet tests of Nikola’s zero-emisssions hydrogen-electric Class 8 trucks by the end of the year, as the first shoots of the necessary fueling infrastructure are emerging in Phoenix.

Organizers for this year's gathering of the Transportation Research Board in Washington have come up with a list of a dozen topic areas that policymakers need to address to ensure a sustainable transportation network.

LAS VEGAS — Amid a sea of gadgets, drones, robots and virtual reality demos, commercial trucking carved out a significant niche for itself here at the Consumer Electronics Show, the world’s largest technology event.

LAS VEGAS — Kenworth Truck Co. and Toyota are collaborating to develop 10 hydrogen-electric tractors for drayage operations in the Los Angeles basin, the companies announced.

LAS VEGAS — Peterbilt Motors Co. has unveiled an all-electric medium-duty truck, adding a third model to its emerging electric-vehicle lineup.

LAS VEGAS — Daimler Trucks North America announced SAE Level 2 automated driving will be available beginning in July on its flagship Freightliner Cascadia model, calling it an industry first.

Infrastructure and trade loom large for trucking in the year ahead as freight carriers adjust to a slower, but still positive, rate of economic growth in 2019, according to industry experts interviewed by Transport Topics.

BILLINGS, Mont. — President Donald Trump’s administration miscalculated the potential benefits of putting better brakes on trains that haul explosive fuels when it scrapped an Obama-era rule over cost concerns, The Associated Press has found. A government analysis used to justify the cancellation omitted up to $117 million in estimated future damages from train derailments that could be avoided by using electronic brakes.