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Congress has again delayed voting on a transportation reauthorization bill, with House Republicans saying they want to rewrite their bill and senators on Tuesday voting against a measure to limit debate and amendments to their two-year, $109 billion bill.

WASHINGTON — The head of the Federal Motor Carrier Safety Administration said the agency will issue strict guidance to medical examiners later this year on how to detect and treat sleep disorders when administering physicals to truck drivers.

South Dakota last month became the 31st state to pass legislation protecting truckers from shipping contracts that require the carrier to shoulder all responsibility for accidents even though they may not be at fault.

A bill passed by Utah’s House of Representatives last month would overturn Salt Lake City’s ban on excessive idling and restrict the ability of other municipalities to pass similar ordinances.

The National Highway Safety Administration said Daimler Trucks North America told the agency it is recalling more than 110,000 trucks because of potentially damaged engine fuel lines.

TAMPA, Fla. — Engineers for truck makers said they are comfortable with their approaches to meet 2014 and 2017 federal greenhouse-gas and fuel-mileage standards for heavy- and medium-duty trucks.

Refrigerated carrier Stevens Transport Co. said it has purchased 1,200 model 3000R refrigerated trailers from Utility Trailer Manufacturing Co. Terms were not disclosed.

Trans Canada said it plans to build the portion of the Keystone XL Pipeline that would run from Cushing, Okla., to Texas refineries as a stand-alone project that could be completed next year.

QuikQ, a provider of cardless fueling for trucking fleets, said it is teaming with LHP Software and Impinj Inc. to develop a product that will deliver internal vehicle data to and from RFID tags during fueling.