The motorway stretches and sub-stretches covered by this measure are, the Costa de Prata Concession: A17 - Mira (LC concession)/Aveiro Nascente, A25 - Pirâmides (Aveiro Oeste)/Albergaria (BLA concession), A29 - Angeja/Maceda, A29 - Maceda/(A29/A44); in the Grande Porto Concession: A4 - Sendim/Águas Santas, A41 - Freixieiro/Ermida (IC25), A42 - (IC24/IC25)/Felgueiras; and in the Norte Litoral Concession: A28 - IC 24/Viana do Castelo.

The 50 percent discount on the toll fee also covers the motorway sections and sub-sections referred to in Decree-Law No. 111/2011, namely A22, which is part of the Algarve Concession; A23, from the Estradas de Portugal Concession; A23, from the Beira Interior Concession; A24, from the North Interior Concession; and A25, from the Beira Litoral/Beira Alta concession.

In the State Budget for 2021, the measure also provides for "a discount of 75 percent on the amount of the toll fee for electric and non-polluting vehicles", but the Government explained that "the implementation of the regime of discounts foreseen for electric and non-polluting vehicles will imply the adoption of a significant set of technical operational measures that prevent the measure from entering into force on 1 July, 2021”.

The Government will institute a regime for modulating the value of toll fees for vehicles of classes 2, 3 and 4 for the road transport of goods and passengers, for highways covered by the new discount model.

The proposal for discounts of 50 percent on the toll rate for all vehicles and 75 percent for electric and non-polluting vehicles was presented by the PSD and approved by parliament under the State Budget 2021.

The Government estimated an negative impact of 160 million Euros annually due to this reduction in tolls.