flagman

He was working as a flagman near Zabriskie Point, where road repairs require traffic control.

From Los Angeles Times ● Oct. 20, 2023

Smith had surged into the lead as the flagman threw the white to signify one lap to go, but it was at the exact moment an 18-truck crash behind him triggered the yellow caution light.

From Seattle Times ● Feb. 18, 2022

If the one-lane construction zone was too long for the flagmen to see each other, one handed a flag to the last driver permitted through to give to the other flagman.

From Washington Post ● Jan. 20, 2022

Once the ducks were gathered, the flock flagman led and his helpers with white flags shooed ducks into line at the back and sides.

From The Wall Street Journal ● Dec. 29, 2016

As War Admiral walked to the line alongside the flagman and starter Cassidy, Woolf worked to fray the Triple Crown winner’s famously delicate nerves.

From "Seabiscuit: An American Legend" by Laura Hillenbrand

Current safety guidelines rely on communications and shared information between operators, rail operations controllers and, sometimes, flagmen posted on station platforms ahead of a work zone.

From Washington Post ● Mar. 24, 2023

The current warning system is built on communication between controllers, operators and often flagmen.

From Washington Post ● Mar. 7, 2023

If the one-lane construction zone was too long for the flagmen to see each other, one handed a flag to the last driver permitted through to give to the other flagman.

From Washington Post ● Jan. 20, 2022

The train-crew gave them as much help as willing hands could, which wasn't much; but by every man doing something they got things fixed, called in their flagmen just before daybreak, and started home.

From The Nerve of Foley And Other Railroad Stories by Frank H. (Frank Hamilton) Spearman

"Glad to see you back," is a familiar greeting from conductors, engineers, flagmen, and porters alike.

From From Pillar to Post Leaves from a Lecturer's Note-Book by John Kendrick Bangs