"There will be several control locations of the National Republican Guard (GNR) and who is not a resident or is accredited for the event does not pass," said a GNR source to Lusa News Agency.

The control of access begins "this afternoon" (15 April) in the connection of the Mexilhoeira Grande junction on the A22 - Via do Infante to the AIA, as well as on the roads that pass through the towns of Pereira, Folga, Montes de Cima, Moinho da Rocha and Casas Velhas, he said.

In an event with public these accesses "would be conditioned", but with the absence of spectators by imposition of rules to combat the pandemic, "there are no constraints but rather a ban on passage," with the exceptions already indicated.

The same source revealed that the device will be "similar" to the one that was on the ground for the edition of the event on 22 November, 2020 with "more than 100 soldiers each day".

On site, the GNR will have several valences of the "traffic, territorial, public order, binomials and cinotechnical" divisions until Sunday.

The 16th edition of the Portuguese Grand Prix will be held for the second consecutive year at the Algarve International Autodrome (AIA). This time with the third race of the season, after having closed the 2020 championship following the suspension of the Argentinean and North American stages due to the Covid-19 pandemic.

From 2022 onwards, the Algarve circuit should be permanently on the calendar for at least the next three years.