Cycling along or across a footpath is already an offence under Section 13 of the Road Traffic (Traffic and Parking) Regulations 1997, as amended, and a cyclist caught doing so by a member of An Garda Síochána faces a fixed charge notice of €60 or on summary conviction in court an offender is liable to a fine of up to €1,000 for a first offence, a fine of up to €2,000 for a second or subsequent offence, and a fine of up to €2,000 with a possible imprisonment for up to 3 months for a third or subsequent offence in any 12 month period.
It is also illegal to use an electric scooter on a footpath and an individual intercepted doing so faces a the same penalty as above, that is, a fixed charge notice of €60, rising to fines of €1000-€2000 if convicted in court.
There is no legislation in place regulating the use of non-electric skateboards and my Department has no plans to introduce any at this time.