Prepositions used for directions

I think this is mostly due to the different types of road.

https://french.kwiziq.com/questions/view/je-m-baladais-sur-l-avenue

Bonjour Frank,

I have experienced this situation when using my sat-nav in the car set to French and noticed more than one way to describe a particular instruction.

I have been inclined to put this down to the speaker's style of expression.

For example.

sur (preposition)  -- marque une position, whereas dans (preposition) -- indique le but de l'action.

You can see from the above that both prepositions can be valid depending on the dynamic situation.

Of course, the direction instructions should indicate to travel on a particular road for example but also it could be argued that the objective is to achieve the correct routing (goal).

This is my experience, but I think that you have raised an interesting point for discussion.

Bonne journée

Jim

Frank, prepositions are tricky and the best is to learn some basics, but grasp the uses as encountered. There are many variations and idiomatic uses. However, it is worth recognising that this is true whether we are speaking of English or French. Direct translations are not always reflective of the nuances of either language, but representations of each language's colloquial usage.

In the cases you list, English also uses different prepositions : 

"tournez à gauche dans la rue Jacques Cartier" - turn (to the) left into/onto Jacques Cartier St/Rd

"Continuez sur cette route" - continue on/along that road/street/(route)

"puis prenez la deuxième à gauche sur l'avenue de la Liberté" - then take the 2nd (on the) left, along/via Liberty Avenue 

The use of different verbs clearly also occurs in English, but French students have it 'drummed' into them not to repeat words if possible, especially when writing. I have counted more than 20 different ways a local newspaper replaces "dire" with other verbs - and in a long article, nearly all of them can be used ! 

https://www.lawlessfrench.com/vocabulary/directions/ 

https://www.wordreference.com/fren/sur 

https://www.wordreference.com/fren/dans