Travel Mapping

Highway Data Discussion => Updates to Highway Data => Solved Highway data updates => Topic started by: mapcat on July 30, 2019, 05:13:16 pm

Title: RI: RI 1A (Charlestown)
Post by: mapcat on July 30, 2019, 05:13:16 pm

At the US1_C point, it is impossible to continue along this route in either direction without taking a long detour along US 1 to a U-turn and coming back the other direction. It seems that the route might be better split into two separate files at that point.

https://goo.gl/maps/TumGWyyq7i6fPJmN9 (https://goo.gl/maps/TumGWyyq7i6fPJmN9)

Title: Re: RI: RI 1A (Charlestown)
Post by: yakra on July 30, 2019, 08:53:37 pm

Hm. An extended "Michigan straight".
There's a similar (what length though?) case on an FM road in TX; I forget which one.
I'm leaning toward leaving as-is right now though. It'd seem odd to separate it out and still have both routes, graph-wise, end at the same point. Plus breaking 6 or 7 .list files.

Title: Re: RI: RI 1A (Charlestown)
Post by: yakra on July 30, 2019, 08:57:33 pm

Quote from: yakra on July 30, 2019, 08:53:37 pm

There's a similar (what length though?) case on an FM road in TX; I forget which one.

FM434 @ US6. (https://www.google.com/maps/dir/31.521272,-97.0862437/31.5218574,-97.0868767/@31.5215281,-97.0914472,16z/data=!4m2!4m1!3e0)
That's 1.2 mi out one way, vice 0.6 mi for RI1A. Yikes!

Title: Re: RI: RI 1A (Charlestown)
Post by: mapcat on July 30, 2019, 09:20:37 pm

Leaving it as-is works; just wanted to make sure you were aware of the odd configuration. I haven't encountered anything like this before, besides a few of the "Michigan straights" you mentioned that never went more than a few blocks out of the way.

Title: Re: RI: RI 1A (Charlestown)
Post by: froggie on July 30, 2019, 11:05:06 pm

Usual terminology for that is "J-turn" or "R-CUT", depending on the agency.