Hi 1LM, Could you take care to get familiar with the highways=* and access=* schema when making changes to these bus gate / LTN changes that you're evidently interested in. This access restriction you've attempted to map is already adequately mapped as access restrictions in the correct place immediately North of Glendare St. It also strikes me that you may be using data sources that are incompatible with the OSM ODb license as Bing has not updated their imagery for this area to show the access restrictions.
On a final point, please be aware that edits to highways in many places around the world will have relations dependent upon them and will need checking after any changes. For example, here you have broken the bus route 16 with these edits. I have taken the liberty of reverting this changeset for all of these reasons above. Do please reply if you feel there might be changes you feel are valid which might be implemented another way.