The Lake Highlands Advocate reports that the proposal would be to change the name at Forest Lane. It is suggested that with the redo of I635 East, an exit sign for "Lake Highlands Road" would bring visibility to increase name awareness and property values for Lake Highlands. There was a public hearing at Dallas City Council last week, but I don't know was resulted.
If passed, Plano Road would only exist in Richardson because in Plano, it's called Ave K. After Plano, in Allen in changes names to Greenville Ave. It's a Dallas area thing -- one road, at least three names!