{HEAD ~ The act} of estimating the cognitive load 12 on the driver also preferably includes normalizing {TAIL ~ the collected factors}, weighting the normalized factors, and summing the weighted factors 
includes normalizing
{ HEAD ~ The act } of estimating the cognitive load 12 on the driver also preferably includes normalizing { TAIL ~ the collected factors } , weighting the normalized factors , and summing the weighted factors
HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH