https://www.faa.gov/airports/enginee...edia/EB-89.pdf
See para e sub para 2.
This requires the suffix to be 1 from one
end of the runway to the other. The picture here is more confused having parallel taxiways. It does lead you to think that you could be at full length when you are not.
If you look at the Chicago airport diagram, the suffix 1 is used well for 14R but not for 09L. There is not a lot of consistency applied.
Perhaps the stub taxiways (not at a runway end) should be numbered with suffix starting at 2 if they are not the full length.