The studies were done on highly congested areas. So there wouldn’t be an easy way to fit in like I imagine you mean. If it’s not congested then I bet it doesn’t matter.

As for people not letting you in the study didn’t say but I’ve not found that to be the case. People realize you are at the end of the road and just let you in overall. Not that I’ve driven everywhere mind you or that a sample size of whatever my experiences are is statistically significant. If it doesn’t freak you out too much maybe give it a shot?