The act of estimating {HEAD ~ the cognitive load} 12 on {TAIL ~ the driver} may alternatively include other suitable methods to combine the collected values 
on
The act of estimating { HEAD ~ the cognitive load } 12 on { TAIL ~ the driver } may alternatively include other suitable methods to combine the collected values
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH