Bus stop tagging

I live in Vancouver, British Columbia, Canada. The bus stops here are tagged in differing ways. They seem to be tagged with the bus numbers or bay numbers for the name field. I am wondering how they should be tagged.

Briefly, each bus stop has a number of ways to identify it.

1. Bus stop number. This is a unique 5 digit number (e.g. 53174) that identifies the bus stop and can be used to request the details of the next buses coming to the stop by an automated service. It may be possible that some of the longer bus stops have two poles with the same number.
2. Bus stop location. This is the location of the bus stop as documented by the Translink website (e.g SB MARINE DRIVE AT KERR ST, 900S BLOCK 8 AVE NEW WESTMINSTER)and I believe is also unique but may not be for larger stops.
3. Bus stop name. Not all bus stops have this, but some of the larger ones have names (e.g. Granville, Bridgeport, Sasmat). These are not unique.
4. Buses that use the stop. This is subject to change as scheduling changes and is definitely not unique. Bus routes are numbers from 1-999, but the route number does not uniquely describe the route (e.g. some routes may go via a side street but share the same route number, and buses going both ways on a route have the same number)

How should I tag the stops?