Travelling by train is the safest way to go but there are still concerns. One of them is the potential for delay in getting first aid treatment if anyone is taken ill on a moving train.
This problem came to the surface when a passenger collapsed on a London-Brighton train.
The solution was to ensure there were always rail travellers who knew basic resuscitation techniques to keep the patient alive in the vital minutes until the train crew could summon the emergency services.
The Brighton Line Commuters – one of Britain's many rail user groups - played a key part in a campaign to get rail travellers trained.
Ten years ago they joined forces with Brighton Heartguard and the BR operator, Network SouthEast, and had a train named the Heartstart Express. Leaflets were distributed to passengers on trains and there was a Heartstart stand at London Victoria.
A heart specialist travelled on the down Heartstart Express, conductors made special announcements and a pagoda was set up on Brighton station concourse for Heartguard demonstrations.
The campaign was extremely successful with more than 400 passengers signing up for courses.
Just before Christmas 2001, however, the problem re-emerged when a passenger collapsed on a morning peak train from Brighton to London.
So the Brighton Line Commuters group is re-launching its campaign to get passengers to sign up for resuscitation courses.
And this time the group is hoping that rail user groups all over the country will follow its example and set up similar campaigns in their areas.
The group is hoping to involve their new train operator, South Central, as well as the mayor of Brighton and Hove, and Heartguard.

Brighton Line Commuters also represents passengers on the Eastbourne and Worthing routes.
The chairlady is Miss Shelley Atlas, vice chairman Richard Longhurst, treasurer Ron Bentley, and membership secretary Chris Bowers.
Contact: commuters at blcmailbox.fsnet.co.uk