Assertion: ballastless track | /r/HasProperty | considered for example
Facets:
value: in short extensions
type: OTHER
value: usually
type: TEMPORAL
value: in tunnels
type: LOCATION
value: for localised replacement
type: PURPOSE
Source sentences:
text: Ballastless track is usually considered for new very high speed or very high loading routes, in short extensions that require additional strength (e.g. railway stations), or for localised replacement where there are exceptional maintenance difficulties, for example in tunnels.