The barrier prevents any passage of those seniors on mobility devices. It also prevents the passage of anyone on a bicycle. This is attested by the well worn paths leading out to the street, placing them in danger. In the image Looking north, there is a drop-off on the west side of the sidewalk, making it hazardous to those requiring walkers.
Below are two sections of sidewalk, one between the tracks, the other immediately north of the tracks. Their condition is pitiful. There is no sidewalk in Cobourg that is in worse condition than this. It is a hazard for everyone.