Heard of something similar like that was in operation in the UK. Where young people were found to committing an offence, there was a fixed penalty of £xxx,not sure of the exact amount, but thee offenders were marched off to the nearest ATM machine and if they had money in it they would pay the penalty there and then and if they did not have any money they would be charged.
This did not last long as there was a public outcry and it stopped and apart from that young people did not have the money in the cash to pay the officer it was a waste of the police time.
On the other side of it think of the time saving aspect of the garda's actions such taking down particulars, court time in sending out a summon and taking him to court, and judge time looking at the case and so forth. But is it legal....for the garde to do such a thing? I am not sure....