Distraction; Situational Awareness
Conflict Ground Conflict; Less Severe; Deviation / Discrepancy - Procedural FAR; Inflight Event / Encounter Other / Unknown
Flight Crew Took Evasive Action
Human Factors
Driving southbound on US81; 3 NM north of Hennessey OK; a yellow low wing crop duster was dusting crops from east to west and west to east across the north/south lanes of US81. The aircraft repeatedly flew beneath 30 FT telephone lines on both sides of US81 and less then 5 FT off the roadway as he dusted both fields. Flying in between north and south bound traffic; I was required to stop. Subsequently; the crop duster flew in front of me (southbound) and between a northbound 18 wheeler. Both vehicles had to slow down to keep from getting too close. Crop dusters normally will fly north/south in the area covering crops. Never have I seen an aircraft fly east/west across US81 and fly below the power lines.
An automobile driver traveling southbound; as well as other traffic in both directions on US Highway 81; had to stop to avoid and encounter with a crop duster passing beneath power lines on both sides of the highway while dusting crops on fields to both the east and west of the highway.