More than 5,000 crimes are being committed every year on railways in the UK by young people, including throwing things at moving trains.
August is the worst month for crime on railways, and recently a teenage boy was killed after apparently getting too close to power lines at a depot in Liverpool after climbing into it.
So do you feel safe on and around trains and railways?
Do you always stick to the rules, or do you sometimes take shortcuts across tracks to get home?
And what about other kids - do you see them messing around and worry that it makes you less safe?
Unfortunately this topic is now closed but there are Comments pages on other subjects on the main Chat index.
"I have seen people (mostly boys) aged six to 30 throwing stones and other little or big objects at trains on the tracks which I think is stupid and extremely idiotic of them."
Ashliya, 9, Rochester, England
"I am worried about railways because they can cause many accidents."
Isabel, 12, Manchester, England
"Why do people keep throwing stuff at trains? It's stupid."
Luke, 10, Oldham, England
"Why should we worry about rail safety? Because if anyone has any sense at all they won't go anywhere near a train track because it is a dangerous thing to do!"
Amy, 11, Darlington, England
"Well some people are silly and throw stones at the train or throw bins in front of the train. They go onto the tracks or climb onto the train. That's just bad, I would never do it because they could kill themselves or even other people. It's a real shame and they're causing trouble."
Aoibh, 9, Derry, Ireland
"Train crimes are really dangerous. Thousands of risks are made by teens around Europe and other countries. I don't play on the tracks but I see teens and early 20s playing on the tracks when a moving train was heading that way. I live near a train track and worry about my sister Ciara, six, falling."
Elz, 10, Wexford, Ireland
"Kids should only cross railway lines with an adult."
Liam, 8, Liverpool, England
"I think that you would have to be pretty stupid to run across a train track, It's a basic rule of safety!"
Kara, 12, Scotland
"Near where I live there is a train station, it's right next to the cinema so it is pretty unsafe."
Charlotte, 14, Lancashire, England
"I do worry about rail safety because I have a younger brother and sister and I always worry about them falling on to the tracks."
Kate, 10, Hove, England
"I'm not really scared, I play nowhere near railway lines. People shouldn't be near railways when there are fields to play in and local parks."
Bethany, 10, Wiltshire, England
"My dad works on the trains. I get the train to and from school so I know a lot about them. Me and my friends don't mess about on the train lines because we don't want to be killed."
Marnie, 12, Merseyside, England
"The railways are safe, as long as you abide by the rules! Some people do it to show off in front of their mates, but it isn't worth it!! Usually it is teens from 12-16, but they should know much better!!"
Faeqa, 11, London, England
"I am a regular passenger on trains. But the thought of any accidents doesn't occur to me. Thinking about it now I don't worry at all because if you climb onto a railway it's your life at risk, but just think it's not only yours!"
Catherine, 10, Stoke-on-Trent, England
"I feel safe because I follow the rules."
Damaris, 10, Leicester, England
"I don't think railway are too safe. It's good that we have bars to know when a train is coming."
Ellie, 9, Surrey, England
"I think it is very stupid if you run in front of a train or even on a rail-line!!! I am quite scared, I've seen the adverts of people losing shoes on railways and the one when someone's foot got caught!!! It's horrible and you are stupid if you go anywhere near a rail line, especially if a train is coming!"
Jaimee, 10, Gloucestershire, England
"No, because I feel that I am always safe around them but I also feel there is no need to worry, just be careful!"
Sophie, 11, Edinburgh, Scotland
"Well I think it is stupid but these people think it's cool to put your life on the line. It's not."
Finn, 11, Manchester, England
"I don't have a railway near where I live, but I do worry about the safety of other children that do, as some do not take the railways seriously. If the crime rate is rising near these railways then their safety is put in serious jeopardy."
Rhiannon, 13, Buckinghamshire, England
"YES! Some people do it for the sake of it, they know they are going to die. But I don't worry if there's a zebra crossing on the railway track."
Bethany, 8, Kent, England
"It's dead stupid, we should have classes for those who do not see the danger or are mucking around on the railway. It is so stupid and I hope those of you who are acting like this stop it."
Zoe, 9, Devon, England
"I don't think that the railways are that safe and there is nothing stopping people walking on the tracks."
Blake, 13, Herefordshire, England
"I worry a little bit about rail safety, because where we live trains usually go through at top speed without warning. But I don't know why someone would be silly enough to play on the tracks and lose their life."
Lux, 10, Leicestershire, England
"I get worried when you're waiting at a station because I'm scared of how fast it goes."
Elliott, 12, Cambridgeshire, England
"I think kids should be thinking more about their actions and it is normally older children that do this!!"
Rachel, 11, Belfast, Northern Ireland
"I am scared of trains most of the time because they go so fast and it is really scary."
Areerja, 13, London, England
"I'm 13 and I would never dream of it. I don't want to risk dying young."
Lizzy, 13, Newcastle, England
"Some people are so stupid! It takes a train a mile and a half to stop. You'll get run over or electrocuted on the side wires."
Sasha, 14, Liverpool, England
"Frankly, the concept of children doing nothing but finding pleasure in endangering their lives is idiotic."
Reece, 12, London, England
"I don't feel very safe around the railway lines, but I would feel much more safe if I knew someone was watching the railway lines."
Rebecca, 13, Sheffield, England
"If you are trying to impress your friends or something, well it is your life you are throwing away! Don't be stupid you SHOULD know better!"
Hanna, 10, London, England
"I think there should be a bit more safety rules, but otherwise I feel safe enough."
Summer, 10, London, England
"No matter how much you educate people, some will always be ignorant towards their safety no matter how many signs you put up. There will always be one who thinks it's cool to break the rules and in the end it could cost them their lives. Is it worth it?"
Alix, 12, London, England
"It's stupid to run in front of trains. Even if the railings are down you shouldn't run in front of them anyway 'cause you could get run over."
Aimee, 10, Salford, England
"When teenagers mess about on the underground there is a risk of starting a fight and pushing one another and falling on the train tracks. "
Shannon, 11, London, England
"You need to be careful when you are at a railway, to make sure you don't run across the track in case a train comes!"
Harriet, 10, Cumbria, England
"I don't know anyone who plays around on railway lines but I think it's pretty stupid. I think some kids do it to impress their friends but that raises question - what is more important, your life or trying to look cool?"
Rosie, 13, London, England
"I worry about the rails a lot because whenever we get to one we have to stop straight away so we don't crash. It gets very annoying. So I think we should worry about rails."
Kayleigh, 8, Cornwall, England
"I think you should worry about it because some accidents happen on the railway, so yes I do worry."
Hannah, 12, Yorkshire, England
"How thick can you get! I mean, you are risking your life!"
Katy, 9, Grimsby, England
"I think it is really stupid and it is their own fault if they do get hurt. But maybe something could be done to avoid it."
Iqra, 12, Lancashire, England
"I agree with Lizzie. It's stupid to run in front of trains. Even a young child knows that."
Isabel, 11, London, England
"I've learnt a lot about railway safety."
Taz, 10, West Midlands, England
"My dad works on the railway and there are always people messing about. They are very dangerous and people know but they just don't listen and will get themselves killed."
Sarah, 12, England
"I think that boy is stupid because he's a teen he should know better. Also I don't feel scared near trains."
Simran, 9, West Midlands, England
"I always feel safe around railways because I stay as far away from the track as I can!"
Zara, 12, London, England
"How stupid can you get? I don't feel sorry for that boy at all - you just don't climb near power lines - it's stupid. People jumping in front of trains really gets to me. Just how thick can people get!!"
Lizzie, 13, Newcastle, England