Aircraft- the Highway Patrol pilots use stopwatches to measure the time it takes a vehicle to travel between two different aircraft markers to determine the speed of the vehicle.
(the Highway Patrol pilots; use; stopwatches; to measure the time) Context(the Highway Patrol pilots use,List([10, 39))):(the Highway Patrol pilots; use stopwatches to measure; the time it takes a vehicle to travel between two different aircraft markers)
the Highway Patrol pilots use,List([10, 39))
the Highway Patrol pilots the Highway Patrol pilots
use use stopwatches to measure
stopwatches to measure the time
the time it takes a vehicle to travel between two different aircraft markers