That makes sense...I had not considered AADT data but I will definitely be sure to reference it next time.

Thanks

Hello,
I removed the trunk route on portions of PA 100 that are undivided and only two lanes, as I did not believe that these qualify a state highway to be a trunk road. While I know trunk roads are supposed to connect cities, West Chester and Pottstown are more smaller towns while Allentown is a true city, so I felt that these portions are better as primary routes.

That makes sense. I have been looking to correct areas where I created a short segment of primary roadway that doesn't provide a meaningful long-distance connection after reading the OSM wiki more. I assume I made this a primary road because it still has the designation of Route 100, which is considered a major state highway. Strangely enough, I have been to that area and there is no signage to indicate Graphite Mine Road is a bypass of Eagle, even though that was the only reason why Graphite Mine Road was built. It would make more sense to me if the PA 100 designation was moved onto the bypass.

Thanks for the clarification. I had given the "trunk" classification because the road contained some attributes of a freeway (high speed limit, passing zone, graded intersection, etc.), and was historically planned to be a freeway, but your explanation about its termination is understandable.

That sounds reasonable, sorry for the misunderstanding. I will admit that when reviewing PennDOT, highway classification, there were some cases that I disagreed with, but I was seeking to find a standardized method of determining road classification.

These changes reflect PennDOT's official highway functional classification. On it, PA 23 is only considered a minor arterial highway (with the exception of a small portion of the road in Phoenixville). Under my understanding, a minor arterial state highway should then be considered a secondary road by OSM standards.