https://www.mapillary.com/app/?pKey=1119423778944190
well, they put a "rising bollard', so I assume "narrow" motor vehicles could pass by :-)
but I do admit it's a edge case.
my main criterium is that this way has been clearly constructed as a paved passage for strolling ... 
other similar ways in Parc Tour & Taxis, Parc de Laeken, Parc Josaphat, etc