center to center of rails

running faces of rails

outer faces of rails

none of the above

only (i)

both (i) and (ii)

both (ii) and (iii)

(i), (ii) and (iii)

Broad Gauge

Meter Gauge

Narrow Gauge

any of the above

roaring rails

hogged rails

corrugated rails

buckled rails

wheel burns

hogging of rails

scabbing of rails

corrugation of rails