When it comes to paved roads in the continental US. An area that is remote likely has few roads and hence the local traffic will take those roads. I tend to think of extra circumstances likely are involved, e.g. straying onto a road that is closed for the season or a gravel road, etc.
I've been to "remote" places, e.g. Siberia, northern Australia, roads in Patagonia etc and usually that description of some traffic applies - and the traffic that is there is also more likely to stop.
I've also broken down a few times and gotten help from those passing by. I typically start walking and have my thumb out:
-- walked ~7 miles on the Dalton Highway in Alaska until someone stopped. They gave me a ride to the Yukon River where I left my bike and got a ride ~140 miles with tourist van to Fairbanks. Next day rented a car and drove back to retrieve my bike.
-- broke down in Wyoming. Not much later, a pickup stopped and gave me a ride to Medicine Bow. Following day got a ride with some of the staff who were going to Laramie. Rented a car and retrieved my bike.
-- not necessarily remote, but broke down in Thailand. Pickup gave me and bike a ride to a "fixer". When they couldn't fix things, got on shared vehicle to next town. Took the train to KL
-- broke down in New Zealand. Started walking. Two Samoans stopped some kilometers later, picked me up and gave me a ride 100+ kilometers to Napier where there was a bike shop
-- broke down on the Alaska Highway near milepost 500. Started walking. Saw a bear. Walked some more and a pickup gave me a ride to the Liard River Lodge. Sorted stuff out remotely with bike shop over the phone eventually sending up a replacement wheel on the bus.
Most all these places were remote enough that I had camping gear with me anyways -- even if I stayed in hotels occasionally, the "gaps" between towns were big enough I also camped. So in general my experiences are that traffic in "remote" locations isn't much but the road choices are also few and people are more likely to stop.
That equation can stop when one goes off pavement or on roads closed for the winter, etc and then I would prepare accordingly...