Preposition Signs
For
With
Regarding
On-object
In-object
As
Like, alike 
From
to-person/thing, to-result
at-location 
to-location

Preposition Signs
​Through 
During
Near
Next-to
Pass-by
About
Of (number of, portion of whole) 
(passive) By
​

In ASL, prepositions are not used all the time because using pointing reference, 3D description, and verb modification can function without prepositions. 

Examples
(Vocabulary vs 3D Handshape Affix)
The drink is on the table. 
​The car drove by the house.