How to tag a bus gate

A bus gate is a modal filter that bans certain vehicles from travelling along a section of highway. Generally they allow buses, taxis and cycles. Other private motor vehicles are banned. They are signed with blue/white round signs, and often have “BUS GATE” painted in bold on the carriageway.

There’s a complicated arrangement of bus gates in Manchester’s city centre and I don’t know how to tag them, because they ban cars in one direction, but not the other. And they’re not dual carriageways.

Here’s a section of what I’m trying to improve - Google Maps

I know private vehicles are allowed in the opposite direction because motorists are forced down it, here https://maps.app.goo.gl/h2DBgPxbmdiwxKsL9

Is there a way of tagging a single carriageway road such that motorists are prevented from driving in a particular direction?

What about the barrier=bus_trap here

or, if there is no physical barrier, use bus=yes, bicycle=yes, taxi=yes, vehicle=no or an appropriate combination of the same tagged on the highway

If the direction is of importance: use bus:forward or bus:backward and … where ‘forward’ and ‘backward’ refer to the direction of the OSM way (OSM ways are vectors which have direction)

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If the blue diagram 953.1B sign applies in the forward direction on the way:

vehicle:forward=no + bus:forward=designated + bicycle:forward=designated + taxi:forward=designated

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Thanks, how does all that work with one-way? Does that tag need to be added, or will the existence of vehicle:forward=no do the same thing just for cars?

On a one-way, ‘forward’ and ‘backward’ must not be used.

‘vedicle’ includes bicycles, mofa, …

See: https://wiki.openstreetmap.org/wiki/Map_features#Restrictions

On a one way with a bicycle contraflow, you might use oneway:bicycle=no etc.

If you’ve got two way motor vehicle traffic on a street, it’s not a one way street in any meaningful or useful way. None of the signage in the example (which isn’t an OSM-compatible source, so it needs to be surveyed to confirm) indicates a the existence of a one way street.