The C3 bus ran from Gare St. Paul to Laurent Bonnevay Astroballe when this was taken.  This is on Cours Lafayette just east of rue Vivier Merle.  At this point the C3 is in the 3rd district, whereas the streetcar track is in the 6th district. :)
<a href="//commons.wikimedia.org/wiki/User:SashiRolls" title="User:SashiRolls">SashiRolls</a>
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<span class="int-own-work" lang="en">Own work</span>