The tying of ponies to trailers/lorries is against the Rules of the Irish Pony Society and is a finable offence, as quoted in Rule 23 in the IPS Rule Book (see below).
“The tying of ponies to trailers/lorries poses a very real and serious health & safety risk to members and the ponies themselves. The I.P.S. strictly prohibits the tying of any ponies to trailers or lorries, regardless of the pony’s temperament.
All shows organised by the I.P.S. will be permitted to charge a fine of €150 for contravention of the above. In the event of a fine not being paid within seven (7) days, automatic suspension will occur, only to be lifted when payment of said fine is received.”