The dog ran along the road.
The dog ran down the road.
I was doing a test paper on English and came across this question "the dog ran __ the road", and from the options only two made sense, along and down, but do they both not mean the same thing?
So far as i've been told, walking down does maybe indicate there being a sense of direction. Whereas walk along, could just mean walking horizontally on something like a pavement, or next to something.
But if you're talking about running or walking down/along the sidewalk or the street, both should pretty much mean the same thing, right? That you're either walking or running on the flat surface of the pavement.