Eli5: How do road workers and pavers work on interstates and highways when traffic is oncoming constantly? How do they place the barrels and cones down? Do they just run an hope not to get run over? How do they plan it?

Question

Eli5: How do road workers and pavers work on interstates and highways when traffic is oncoming constantly? How do they place the barrels and cones down? Do they just run an hope not to get run over? How do they plan it?

In: 3

Answer 1

A police car will start driving in an S pattern with its lights on to block and slow cars down about a few miles back. A truck will drive down the empty freeway and start laying down cones. Other signs and warning will also be placed.