Welcome Amey
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If the road or side is best to capture may be a subject of debate. Some times it is just a subject of what is practical. Personally I often shoot both forward to the sides. There is also no requirement of pointing the camera forward.
I think it is ok to request pictures from users, if you need forward facing images for e.g. OSM work. But everybody are ultimately free to capture in any direction.
Kind regards,
Simon
PS. I really like when you get into the small roads, perhaps because I like seeing how towns are when you get away from the main roads. Keep the images flowing 