Check the St Clair street car project.  Most of the stops had to be re configured due to errors in platform construction and height of the streetcars.  If memory is correct the left turn lanes were also too small to allow fire trucks to make the turn.

At queens quay the radius of one of the turning circle was too tight to allow for the street cars to make without derailing on a pretty regular basis.

So to answer the question would Metrolinx miss something......