When the train came to Australia in the 1830s, its original purpose was transportation.
But at Flinders Street and central station (Central Station), as well as at other stations across the country, passengers come and go, and these places are also a haven for make love, crime and corruption.
One of the most shocking recent incidents on train was on the (Wollongong) line in Wolonggang, southern Sydney, when a man took an early morning ride with a strange woman, oral sex.
A review of Australia's rail history shows that such behaviour is not uncommon, as commuters seem keen to spend their time on trips in a "no-ordinary-way" fashion.
In 2014, a couple in northern Melbourne took to the Eppingline when they suddenly had a sexual interest, and in broad daylight they were photographed directly inside the car by make love, and posted on the Internet. The two men then got off at the Reservoir station.
Australian public transport, naked body parts are also common. Also on the Melbourne train, a woman had to look at another passenger's exposed buttocks.
Nearly a year later, police arrested two men in connection with a 27 million-yuan drug transaction at the Clyde train station in northern Sydney.
The new state police and Australian federal police carried out a joint investigation and the arrest, after which they raided an apartment in Sydney's CBD and found drug. Police also searched the scene for another 4 million yuan in cash, 25 kilograms of methamphetamine, 2 kilograms of cocaine, 280 pieces of acid and 300 grams of MDMA.
In 2016, another couple also filmed a make love video on a Melbourne train, titled "Trainline Tramp," which showed the couple having multiple sexual behavior, incidents at a station outside Geelong, Melbourne. The 8-minute video was watched by thousands of people before it was deleted.
Last year, there was another incident in Brisbane, when a train broke down so long that passengers had no choice but to urinate in the car.
The "childless" passengers, including young children, were trapped on the train for a full three hours. It was dark inside and, without a toilet, the passengers had to urinate in the car on the spot.
Because the door can not open, passengers can only think of the car as a toilet, this is only one side. There are also passengers in the hangover, vomit the entire seat and the floor of the unbearable sight of the tragedy.
In recent years, trains have also often been racist, with startling roar videos circulating online.
Last April, a passenger on the Melbourne train told a Arab man: "go back to where you were." The two men then clashed.
In February, a well-dressed Sydney businessman and another man punched each other on a train. The young man grabbed an elderly man by the neck and punched him twice in the face, while the other slammed at his body.
But in the end, when the two fell under their chairs, they suddenly stood up and hugged each other, and the other passengers cheered.
Last year's festival day, a new state freak on train masturbation, sitting from one seat to another seat, constantly staring at the female passengers.
Smith (John Anthony Smith), 24, masturbates on the train from Sydney's Dapto to Bundy 06:24. Police released closed-circuit surveillance and Smith turned himself in, but said he "doesn't remember it at all."
A recent global sensation was Brennan (Shane Brennan) and Gordon (Chantell Gordon) on train oral sex.
Court documents show Gordon masturbating in the car on December 14 and Brennan heading towards her.
The train video captured a picture of two people, oral sex. Brennan said earlier that the woman asked him, "I want to burn my, do you wanner have sex with me?."
Brennan admitted that he didn't know there was surveillance on the train, and that he just couldn't help it.
"she was that masturbation, and I wouldn't have done it if she hadn't bothered me."
Brennan said he would never do that again, and he was sentenced to a 12-month watch, but he asked: "how many people can refuse this temptation?"