answer the two questions 9
https://www.forconstructionpros.com/asphalt/articl…
https://www.constructconnect.com/blog/10-road-cons…
https://www.dbkrieginc.com/onsite-work-safety.php
https://www.cdc.gov/niosh/topics/highwayworkzones/…
https://www.cdc.gov/niosh/topics/highwayworkzones/…
https://safety.fhwa.dot.gov/wz/resources/fhwasa030…