The route serves to connect downtown Hamilton to trains on the Lakeshore West line in Burlington for further travel eastward towards Toronto during off-peak and counter-peak hours, as the portion of the train line between Hamilton and Burlington is out of service at those times.
Additionally, the route serves as a train-bus service of the entire Lakeshore West line during early morning and late night hours when the entire train line is out of service.
The train meet service operates primarily on Highway 403, while the train-bus service also operates on the Queen Elizabeth Way, or the QEW, and the Gardiner Expressway.
The 18 Lakeshore West route is a train-bus service, replacing Lakeshore West line train service early in the morning and late at night. During off-peak and counter-peak hours, it also connects the Hamilton GO Centre to the Lakeshore West line at either Aldershot GO Station or Burlington GO Station.