The maintenance of surface transport infrastructures should also be supported by RTD activities since very often it is very cost-effective, if not more cost-effective than infrastructure construction.
PTA darbībām ir jāatbalsta arī sauszemes transporta infrastruktūru uzturēšana, jo tas ļoti bieži ir ļoti rentabli vai pat rentablāk nekā infrastruktūras objektu būvniecība .