Elgan Williams was to have competed at the show

There were calls for action after Elgan Williams, 16, from Denbighshire, was fatally injured outside the showground.

He died the next day. At an inquest on Thursday, his father made a plea for improvements.

The Welsh Assembly Government has agreed a temporary 30mph limit will be imposed and warning signs erected.

Elgan, from Groes, had been due to compete in a sheep-shearing competition at the show, held at Llanelwedd.

He was crossing the A470 between the showground and the nearby campsite when the accident happened on the eve of the start of the show in July.

He received head injuries in a collision with a Vauxhall Astra estate. Powys coroner Geraint Williams recorded a verdict of accidental death.

More than 200,000 people converged on the ground in 2004

Elgan's father, Bob Williams, asked for the route used by young farmers camping overnight for the show to be lit at night.

The coroner said he would ask for immediate action from the showground committee.

On Friday, the assembly government said it would install a sign for the duration of this year's show to warn drivers of pedestrian hazards, and a temporary 30mph speed limit.

Police have asked the Safety Camera Partnership to enforce the speed limit during the show.

The assembly government said that as relatively low numbers of pedestrians crossed the road at other times of the year, permanent street lighting would not be installed.

It did agree, however, that the Royal Welsh Agricultural Society or the Young Farmers' Clubs in Wales would be allowed to put in temporary lighting for the duration of the show.

Following last year's tragedy, show organisers called on assembly officials and Powys County Council to review road safety.

The council installed temporary lighting as an emergency measure at the location.