This was already discussed recently. `route=road` is already used for numbered routes. This is not one. 
You need to distinguish between `type=street` for most closely gazetted street names, and `type=tunnel` for tunnel structures (which can include different features `railway=` and `man_made=pipeline` etc) . For wiki compatibility, it has been discussed to use `route=street` . For arbitrary sections of roads that aren't gazetted street names, I suggest `route=highway` first similar to `route=railway` 