First, as far as I know, the new tool DOES use multiple days of information.
That's good to hear as each address has its own obstacles. Because two stops are on the same street, doesn't always make them comparable.
Keep in mind that the new tool is only measuring walk distance. For residential deliveries, this is a large area for inaccuracy depending on the skill of the observer.
Does this gps generated measurement record a straight line measurement or can it detect the zigs and zags of the "established pedestrian walkways" that we are supposed to use verses cutting across the lawn?
What the tool does is use satellite maps to see where you parked, and where the delivery location is. They mark both, and now they know the walk distance with much more accuracy.
You asked why not do a daily measurement.... There is not a way to know on a daily basis how far you walked to make a delivery..... They actually discussed using a pedometer, using a laser distance measurement, using ZIP+4 data, etc.
I was suggesting that by using multiple days, a larger sampling of addresses could be considered making any averages more representative of the entire route.
The method they chose reduces cost, increases accuracy, and is easily audited.
This statement puzzles me. A method that reduces cost, assuming you mean the cost of the study, can almost never increase accuracy. To me this was the flaw in the old, hands on method of time study. To avoid the cost of having an IE person on car for multiple days, one days results were accepted whether the day was truely representative of the route as a whole.
P-Man