Reckless rail commuters risking their lives

FIRST ON 7: Dramatic security video obtained by 7News has captured some amazing escapes by Sydney rail passengers who strayed too close to platform edges.

Transport bosses say they were lucky not to be killed.

Some footage shows a man wobbly on his feet, as he leans for support on a moving train.

He is whacked by the side of a carriage, and his legs disappear between the train and Redfern station.

But somehow he escapes injury and is pulled to safety by a Good Samaritan - next time he might stay behind the yellow line.

"Doing the wrong thing can have severe consequences not just for yourself, but for other people around you," NSW Transport Minister Gladys Berejiklian said.

At Quakers Hill Station, a group of kids hold up a night service by blocking the doors.

As it finally moves out one of them jumps into side of the train, falls, and is briefly dragged along the platform.

In another incident, a teen at Gymea cops a savage blow as his friends play-fight. He is floored, and his head is left dangling over the platform's edge.

Some London stations have protective glass doors. They are safer, but expensive.

There are too many platforms and stations in Sydney to build barriers between trains and people, so passengers will have to use a bit of common sense - a message the government is keen to push ahead of rail safety week.

"Actions that appear harmless can actually cause fatalities, not just for the people conducting those activities, but for people around them," Gladys Berejiklian said.