How are synaptic vesicles brought to the synapse?
You are looking for a review on vesicle cargoing along the cytoskeleton. This open access article is the most recent I found on the subject.

From the abstract: 


  How synaptic cargos achieve specificity, directionality and timing of transport is a developing area of investigation. Recent studies demonstrate that the docking of motors to their cargos is a key control point. Moreover, precise spatial and temporal regulation of motor-cargo interactions is important for transport specificity and cargo recruitment. Local signaling pathways Ca2+ influx, CaMKII signaling and Rab GTPase activity regulate motor activity and cargo release at synaptic locations.


M. A. Schlager, C. C. Hoogenraad: Basic mechanisms for recognition and transport of synaptic cargos. In: Molecular brain. Vol. 2, 2009, p.&nbsp;25. DOI:10.1186/1756-6606-2-25. PMID 19653898. PMC 2732917.