Discussion: mapping subway entrance canopy

look at the subway station entrance on the top right photo. Can this be mapped using 526.2 Canopy symbol ? or do I have to use some other symbol? it is a steel frame and glass structure.

If you're able and allowed to run through it, it's a canopy, but the impenetrable glass walls need to be shown properly. If you can't go inside (or if you have to open a door to get inside), then it's a building with big windows, and the fact that you can see through it doesn't matter. I think.

agreed, I'd map that as a canopy with impassable walls on the sides. They're impassable despite the fact that you can see through them. I'd also map as much of the inside of it as you can with fences and walls with it still being legible. If it becomes illegible then you can skip the internal fence detail without losing anything too important. I'd first try mapping the fences inside as impassable walls though.

something like this:

If there is paving on both sides as jteutsch has drawn, then I can't see the point of mapping it as other than a building. Even if there are entrances at both ends, it's got to be faster to run around it than through it. Maybe you want to put a control inside, but why? Does it make sense as the logical end or start of a good leg?

The problem with that simmo, is that you'd be mapping a physically passable feature as impassable, in a similar way to what was done in France last summer and led to huge huge problems at the WOC sprint quali.

I understand and agree with your reasons for suggesting mapping it as a building but I think you're inviting disaster doing it that way which just isn't worth it.

Don't forget the cave entrances on the inside... :-)

you got me there - point for jj

I don't think its at all comparable with the 2011 WOC sprint, which were (a) a wall mapped as impassable to a certain point then passable, and (b) grassed areas shown as out of bounds. Lots of buildings could be theoretically passable if a door were open on both sides, but competitors know not to go through. Same thing here.

In fact you would be inviting disaster if you did encourage people to go through and they somehow ended up on the wrong level by going down one of the 'cave entrances' as jj described them. This happened right at the start of an event in Australia a couple of weeks ago. Have a look at this video (about 4 minutes in), then look at the map. Several other people found themselves on an unmapped level of this building pass-through right after the start. (Fortunately Oscar recovered from a 90-second loss here and finished only 11 secs behind the winner, then demolished him in the chasing start second leg. There's a headcam and map of that too here.

Fantastic terrain at Kelvin Grove! Fascinating to see how town and country come together in Australia but looked in vain for any cows making their way to the fodder racks.