I understand the relation isn't very usable in its current form. It's far from the finished product.

I'm laying the groundwork to transition bus routes to ptv2 in the long term by mapping the bus stops that'll be added to their relations.
https://www.openstreetmap.org/node/11628003471

Also repurposing a lot of the retired "X" express bus routes into SIM routes.
https://www.openstreetmap.org/changeset/140904155

Because the SIM1C route was very similar to its SIM1 counterpart, it was pretty quick and simple to duplicate that ptv1 route.

Once I reach a stage where all the stop nodes on a given route are created, I'll gladly take a stab at converting that route to ptv2 by following the path of the v1 route and adding each of its roadways into one (or both) of two directions.

The tl;dr is that ptv2 is the end goal, and making these ptv1 relations is a step toward that without creating TOO much double-work, since having a v1 relation with all the roadways I need in it makes the next step much quicker.