Considering how inattentive drivers are today, anything that has to do with working on the side of a roadway scares me cones or no cones. Lots of drivers today drive in the 'ozone.
Just had one of the local refuse company employees get run over while emptying trash cans on the back of the refuse truck. The driver ran him over and he got stuck under the car and was dragged a couple hundred feet before the driver stopped. (or realized he had someone under the car). Broke both legs, one arm and collapsed lung. Critical condition and a young person too.
Driving today is a serious responsibility but people take it for granted. I'd never want to work on the roadside, cones or no cones.