There has been in the past some controversy here over whether or not the brake lamps should come on with the exhaust brake engagement, and we probably don't need to get into that all over again. I doubt that it necessarily means your coach was registered in Canada, Stan. Apparently modifications can be made if for some reason it concerns you. It doesn't me.
I too must back up onto my home entryway from a suburban street. Traffic can be problematic (and aggravating). Since my Monterey is relatively low slung at the hitch and due to its short length it has limiting straps on the rear axle to protect the short drive shaft, I have particular issues negotiating even the very slight angle across the sidewalk/driveway entrance. Raising the coach too high actually will tilt the hitch closer to the concrete than it is at ride height since the front raises higher than the back. And Monaco wired the air system to come back to Travel Mode when the Raise button is released, so I have to push/release the switch constantly as I back up in order to maintain the ideal height. Plus I back in at an angle to help the hitch clear, and yet must turn to feed the back between the corner of the garage and a fence. Fun! Fretting over emergency flashers is not a top priority for my concentration. I just make the maneuver at the right time of day, and post a "flagger" if need be on the street. The only time I use emergency flashers is in the unusual circumstance going up steep grades, especially at night, where I deem it safest to stay in the right truck lane and end up behind a truck limiting my speed, or when experiencing a breakdown on the road.
Though there can be fruit and nut and vegetable limitations going into Canada, it mostly is for those that are also grown in Canada, and some exotics. The list has been known to change, so a perusal of the guidelines and any updates concurrent with your planned crossing is prudent. There should be references/links relative to that point on the websites I referred to. I surmise the reasons for the restrictions are mostly twofold, to control virulent pests such as larvae and animal diseases, and to assist the sale of those products on the Canadian side. If we cross in the Okanagan region in summer, we consider it no big deal since we are driving into the midst of Canada's garden at Osoyos and we enjoy the fresh produce we can begin our tour with. We try to plan days in advance so we have consumed any restricted foodstuffs before arriving at the border; throwing good food out happened only once decades ago, but not since. Also note that where restrictions exist they affect fresh foods - many of the same ones but in canned and packaged/processed versions are allowed. Again, read the lists carefully.
Joel