No person shall operate a vehicle at excessive speeds while passing highway maintenance crews, survey crews or construction crews which are engaged in maintenance survey or construction crews which are engaged in maintenance survey or construction work upon the state highways and roadways thereof. When approaching said crews all drivers of motor vehicles shall slow to a reasonable and prudent speed in accordance with existing conditions at the work site. All drivers of vehicles shall obey the flagmen and signs directing traffic at each such work site.
37 Miss. Code. R. § 1-7501-09001-316