The present invention relates to a 
road surface spectrum and GIS vector data fusion method and 
system based on a 
semantic technology. According to the method, firstly, a great quantity of ordered interpolating points are calculated by a Cardinal cubic spline curve interpolation 
algorithm; then points, of which the number is the same with sampling times of a 
road surface spectrum, are selected at an equal interval from an interpolated 
point sequence; altitude data of the 
road surface spectrum is processed by adopting a 
triangulation network generating 
algorithm to construct an irregular 
triangulation network and then GIS two-dimensional vector data is fused into the constructed 
triangulation network by an 
embedding algorithm; and next, semantic ontologies are established, according to extracted semantic rules and data fused on the bottom layer, by protege, 
inference rules are made by the 
logical relationship between the ontologies and data according with 
semantics is retrieved from 
metadata to be output on a query interface. The 
system consists of a data fusion module on the bottom layer, a fusion module based on the 
semantic technology, and a query interface module. According to the present invention, a user can know the real condition of a pavement and high-
quality data services are provided for realizing intelligent transportation.