Expenditures on public transit operations (bus and train maintenance and driving) tend to create relatively large numbers of jobs. According to one study, money spent on public transport produces almost 9% more jobs than roadway repair and maintenance projects, and nearly 19% more jobs than new roadway projects, assuming half the transit funds are spent on new capital projects and half on operations (STPP 2004). Transit vehicle purchases tend to have smaller economic impacts because they are mostly imported, although this could change with improved domestic transit vehicle production. Transportation maintenance and repair projects are generally faster to implement.