Catatonic
Nine Lives
The time study is independent of driver actions.I believe part the answer might have to do with this;
The time studies on city routes were more likely done years ago with a massaged load, on a perfect weather day, in a holiday week, by a younger driver that just wanted to get home early that day.
The time studies of more desirable country routes bid by higher seniority drivers, are naturally going to be more realistic, since on average, there are a million less variables that can mess up your day- as well as a more likely chance that the said driver works an average pace and doesn't cut corners.
The time components start out the same for all drivers.
It is the additive factors per stop and per miles that make the difference in allowances.
The first thing a time study observer is trained on is to ignore driver actions and to look at route conditions.
Double stops are eliminated as these can cause a lower stop allowance.
Excessive miles will drive up the MPH on-area.
A massaged load has no effect on the allowances. It will hide normal misloads and poor load quality which are eliminated from the time study.