I wouldn't be happy with allowing a 3yr to go running down the pavemen with lots of traffic
Yes you need to allow children some trust and they need to learn boundaries but were quite far place markers
What wrong with children needing to learn to walk nicely beside you? mean nanny here lol
Running is for parks and gardens
And wtf at mum having a meltdown as we child falls over and cries 
Sadly seems many dads don't spend more then a few hours total alone time :( same in my last job. Most time dad had the 3 and 1 yr old was 2hrs one Saturday totally alone :(
Still don't believe time out should be in bedrooms - too many distractions and you can see them
Far better to have naughty step /corner in room
Plus what happens if explodes when at a friends /out of the house - can't put then in someone else's bedroom
Also wonder if all the kids on the show behave like that at school and nursery - bet they don't !!!!
Therefore all the parents need to do is be firm - say no and carry it out and set limits for kids
Children know who is in authority and what they can get away with