Passengers travelling on the Weymouth-Waterloo line today are warned part of the line is closed due to engineering works.
It means buses are being laid on to ferry passengers between stations.
Fast bus services will run between Poole, Bournemouth and Southampton Airport Parkway.
Long distance passengers should use these buses to catch connecting trains.
Bus services for local journeys will run between Southampton Central, Brockenhurst, Bournemouth and Poole, also between Southampton Central and New Milton via Brockenhurst and Lymington.
Beaulieu Road station in Hampshire will have no service today.
There is a revised train timetable in operation. Check at southwesternrailway.com before travelling or nationalrail.co.uk or call 03457 484950.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here