2Any order, byelaw, regulation or other instrument made by a local authority with respect to a- road which becomes a trunk road, which would, if it had been made after the road became a trunk road, have required the consent or approval of the Minister, may be revoked or varied by the Minister in like manner and subject to the like conditions as the original order, so, however, that no appeal shall lie to quarter sessions or petty sessions against any order made by the Minister under this paragraph.