Jesus Torres can see a lot from his perch in the cab of a tanker truck. Cars with blown tires on the side of the pothole-scarred roads. Overturned tankers on exit ramps curved too sharply for large modern trucks to handle. And more often than not, red tail lights snaking into the distance. “They need to add more lanes to all the highways,” he said on a recent morning on Interstate 270 just after leaving the Phillips 66 terminal in Commerce City. Far too often, Torres said, accidents on this highway through Colorado’s industrial center will cause long delays that...