Caption: CP 9732 and 8849 lead their long heavy train at a safe speed downgrade on the Hamilton sub, as they approach the CTC section. The first steel coil cars are on the bridge over Highway 403. There is a big "S" curve here, with more of the train visible through the trees, above the CN Dundas Sub signal to the right.

From observation and my scanner, it is apparent that operating trains this long and heavy on the Hamilton sub has some operational complications. Speeds must be kept low to maintain control downhill, while helpers are needed to get some of the longest heaviest trains up to the top of the Niagara escarpment. The requirement not to block grade crossings near Kinnear yard too long can be an issue.

For CP trains, and the TH&B before, the preferred route between Hamilton and Toronto used to be over the CN Oakville sub, using the Canpa Connection in Etobicoke. This route is significantly shorter and faster, and avoids ascending and descending the Niagara escarpment. Presumably more GO train traffic and CN usage charges and restrictions have seriously discouraged the routing of CP trains via the CN Oakville sub in the years since the TH&B's long term arrangement expired.