In WY, it used to be that stops with more than one stop on the same side of the road had route numbers on, and those elsewhere just had "bus stop" then it was changed maybe 15 years ago to the current system of stating a couple of main places served.
The timetable case (where one is provided) does show service numbers though.
I remember when going to school all the stops I used used to have the service numbers on.
I can't stand the "easy-to-use" timetables Metro use in the bus stops.
A poor example is the main stop in Ripponden - it lists departure times only and then "fastest times to key destinations".
So an unsuspecting soul could see that Halifax is 23 minutes away (evening time on the 528).
They then hop on the service 531 at 0822 and find it takes 51 minutes even if it's on time and think "stupid buses".
On the other hand, their printed timetables are some of the best around, including listing all the roads the bus passes along.
The stop outside my house lists the departure times into Keighley - however these are "estimated" and the bus usually passes about 3 minutes before the times stated, having left the previous timing point on time.