Street too narrow for two trolley tracks?  Use a gauntlet track! Amsterdam, the Netherlands.
<a rel="nofollow" class="external text" href="https://www.flickr.com/people/63051795@N00">Russ Nelson</a>
CC BY-SA 2.0
<a rel="nofollow" class="external text" href="https://www.flickr.com/photos/russnelson/3895314696/">A gauntlet track in the Amsterdam trolley system.</a>