Hi everyone,
I originally was using MapPoint 2004 to create drive-time radii around various office buildings. However, when a colleague who has MapPoint 2006 tried to recreate these drive times, his coverage areas were much greater. We have confirmed that the average traffic speeds are the same between the two versions.

Does anyone have any idea why this might be happening? Did Microsoft make significant road reclassifications (from arterial roads to limited-access highways for example) that could be causing this? I know that new roads could be partially responsible, but there are significant differences across all areas (so I don't expect that is the main cause).

Any suggestions are welcome and very much appreciated.

What is the drive-time point and time you are looking at?

I don't think the DT polygon created from MapPoint is ever that precise for small areas, depends on the scale.

Eric