Article 4 Power to deviate
In constructing or maintaining either of the scheduled works, the undertaker may—
deviate laterally from the lines or situations shown on the works plans within the limits of deviation for that work shown on those plans, and
deviate vertically from the levels shown on the sections—
to any extent not exceeding 3 metres upwards, and
to any extent downwards.
The undertaker may in constructing or maintaining either of the scheduled works lay down—
double lines of rails in lieu of single lines,
single lines of rails in lieu of double lines,
interlacing lines of rails in lieu of double or single lines, or
double or single lines of rails in lieu of interlacing lines.
The power in paragraph (2) above shall not be exercised in the case of Work No. 1 without the consent of the street authority, but such consent shall not be unreasonably withheld.
the undertaker may in constructing and maintaining Work No. 2 provide within the limits of deviation such number of lines of rails and sidings as may be necessary or expedient.