The phrase "smooth highway" refers to a road that is well-paved and free from bumps or obstacles. It signifies an easy and effortless journey without any troubles or difficulties. Full definition
It's a very well - judged set - up for people who'll mostly use the car to drive around town or drive across the countries on relatively smooth highways. (overdrive.in)
With perfectly maintained and smooth highways carved into the rugged shoreline, you'll enjoy every second. (findingbeyond.com)
The PHEV's regenerative braking can also be adjusted to five settings to deliver strong regeneration, with jerkier braking, or virtually no regeneration, for smoother highway driving. (autonews.com)