This is the 15401st most frequent Russian word.
правого
"Правого" means "of the right" (genitive or accusative case, masculine form).
Here, 'правого' refers to a political orientation.
У меня есть брат, он правого взгляда.
I have a brother; he has a right-wing viewpoint.
In this sentence, 'правого' is used to describe a location relative to the river's direction.
Я живу в доме рядом с правого берега реки.
I live in a house near the right bank of the river.
Here, 'правого' describes the position of the passenger on the right.