select astext(intersection(t1.geom, t2.geom))
from centreline as t1, centreline as t2
where t1.lf_name like ‘victoria park%’
and t2.lf_name like ‘sheppard%’
and t1.fnode=t2.fnode;

It’s really quick, but that’s because I created an index on fnode:

create index idx_fnode on centreline(fnode);

It also works on the older data release.

select * from centreline
where lf_name like ‘eglinton ave%’ and fnode in
(select fnode from centreline where lf_name like ‘kennedy rd%’)

More work is required, but it doesn’t take forever.