Central MA, US: very odd routing behavior: tale of 2 routes

[icycle]

I should be clear that Rte 9 is not divided/high speed in all sections...but the DOT does show it at the same level throughout, so this leads me to favor not making it a major highway.

[harling]

So my next question is...should I demote Rte 122A (Main St Holden/Grove St Worcester) from a minor highway to a primary street? Despite it being a numbered route, it feels the same to me as the other access roads. As a minor highway, it's going to take precedence when it falls outside the 10km ends of the route, and that's not really a good thing--sending people down Grove St just sticks them in a mess of lights and one way streets (W Boylston St/Gold Star Blvd in Worcester).

Remember that Waze also considers transit speed when selecting a route, not just road type. My preference is to leave numbered roads as Minor Highway; doing so mainly allows the routing engine to consider this road mid-trip, rather than disregard it. Waze will still give precedence to a quicker route, if one is available.