Óscar Puente faces today the pressure for his resignation after the train accident in Urda amid doubts in the PSOE and support from Moncloa

The Minister of Transport and Sustainable Mobility directs the state policy on infrastructures, transport services, and sustainable mobility. Their functions combine the general powers of any minister with the material competencies of the department. It is important to distinguish their political leadership responsibility from the administrative and technical tasks that correspond to the secretariats, general directorates, and competent entities.

1. General functions as minister

Article 4.1 of the Law 50/1997, of the Government establishes four functions applicable to the holder of Transport:

• Develop the Government's action in their department, in accordance with the agreements of the Council of Ministers and the guidelines of the president.
• Exercise regulatory authority in matters pertaining to the ministry, within legal limits.
• Exercise other competencies attributed by laws and organizational and operational provisions.
• Endorse, when appropriate, the acts of the King related to their scope of competence.

These powers should not be confused with decisions reserved for the Council of Ministers: for example, approving bills or royal decree-laws corresponds to the collegiate body, according to article 5 of that law, not to the minister individually.

2. Material scopes of the department

Article 7 of Royal Decree 829/2023 assigns them the proposal and execution of policies on infrastructures and state-competent land transport, air, and maritime transport, to guarantee fair and sustainable mobility.

Article 1.1 of Royal Decree 253/2024, which develops the ministerial structure, specifies this mandate:

• Infrastructures: direct policy on state infrastructures for land, air, and maritime transport, including investment planning and programming.
• Transport services: promote their control, organization, and administrative regulation within the state scope.
• Sustainable mobility: promote its social, economic, and environmental dimensions, including active mobility.
• Postal services: exercise normative regulation of the sector.
• Geographic information: promote and direct state services of astronomy, geodesy, geophysics, and cartography.

3. How these competencies are developed

Articles 1 and 2 of Royal Decree 253/2024 place under the minister's direction the State Secretariat for Transport and Sustainable Mobility. This defines and proposes policies, coordinates bodies and entities, programs investments, promotes intermodality — the combination of different means of transport — and cooperates with territorial administrations in sustainable urban mobility.

In railway matters, article 5 assigns to the Directorate General of the Railway Sector the planning of the General Interest Railway Network, preparation of standards and studies, coordination with administrators and operators, and certain expropriation actions. These functions respect the competencies of the State Railway Safety Agency and the National Commission of Markets and Competition.

The structure also differentiates land transport, air and maritime transport, and sustainable mobility. Therefore, the minister's direction does not mean personally resolving each authorization, inspection, or technical action.

4. Coordination, emergencies, and limits

Royal Decree 690/2025 modified the structure to strengthen crisis supervision and coordination, prevention, and victim assistance in accidents. This coordinating approach does not replace the direct management of sectoral bodies nor the functions of the independent investigation authority.

Finally, article 1.5 of Royal Decree 253/2024 requires acting in coordination and without prejudice to other ministries. Transport does not concentrate all competencies related to travel: Royal Decree 829/2023 assigns traffic and road safety to Interior, and housing and urban agenda to its specific department.

Before becoming Minister of Transport and Sustainable Mobility in November 2023, Óscar Puente developed a twenty-year career as a lawyer and a political trajectory centered in Valladolid. He was a councilor, mayor for eight years, PSOE leader, and finally a national deputy. His arrival in the Government was preceded by municipal responsibilities and his stage as spokesperson for the federal socialist leadership.

Education and legal practice

Born in Valladolid on November 15, 1968, Puente holds a Law degree from the University of Valladolid and a master's degree in Political Management from the Jaime Vera Foundation. According to his official biography, he practiced law from 1995 until June 2015, when he assumed the Mayorship of Valladolid.

Therefore, during his early political activity years, he combined the legal profession with responsibilities in the party and the City Council. Access to the Mayorship marked the end of his professional practice as a lawyer.

Early responsibilities in the PSOE

He joined the PSOE in 1990. His first notable organizational responsibility came in 2004, when he was appointed deputy secretary general of the Provincial Executive of the PSOE of Valladolid, under the direction of Jorge Félix Alonso. This stage preceded his entry into the municipal corporation (Newtral profile).

In 2007 he was elected councilor of the Valladolid City Council and, since 2008, he presided over the Socialist Municipal Group. In 2009 he assumed the General Secretariat of the Municipal Executive of the PSOE, which he held until December 2021. That month he took over the provincial General Secretariat, a responsibility different from the leadership of the city grouping (official biography).

Eight years leading Valladolid

After eight years in municipal opposition, he became Mayor in June 2015. Although the PP had been the most voted candidacy, Puente gathered the necessary support for investiture and ended two decades of PP municipal governments. In 2019, the PSOE won the municipal elections and Puente continued as mayor (trajectory in Demócrata).

During that stage, he also assumed municipal representation functions outside Valladolid:

• President of the Spanish Network of Healthy Cities of the FEMP, between November 2015 and December 2019.
• Member of the Governing Board of the FEMP, from September 2019 until May 2023.
• Representative of the FEMP in the Urban Initiatives Network, between October 2020 and May 2023.

These responsibilities appear in his institutional curriculum.

National projection and arrival at Congress

Between June 2017 and October 2021 he was spokesperson of the Federal Executive Commission of the PSOE, after Pedro Sánchez's return to the General Secretariat. He combined that function with the Mayorship, adding national political communication responsibility to municipal management (Newtral profile).

In May 2023, the PSOE was again the most voted force in Valladolid, but the agreement between PP and Vox allowed Jesús Julio Carnero to access the Mayorship. Puente left the position in June and led the socialist candidacy for Valladolid in the general elections of July 23, 2023, obtaining his first seat in Congress (Demócrata).

In September he spoke on behalf of the PSOE in the investiture of Alberto Núñez Feijóo. Two months later he was appointed Minister of Transport and Sustainable Mobility: his appointment was announced on November 20 and he assumed office on the 21st (RTVE profile).

To answer correctly, it is necessary to distinguish between the voluntary resignation of a minister, their individual dismissal, and the resignation of the Government as a whole. These are different situations: the requirements of the Government's responsibility mechanisms before Congress cannot be automatically transferred to the departure of a specific minister. The sources consulted allow explaining these collective mechanisms, but do not contain the specific regulation necessary to rigorously detail the formalities of an individual resignation or dismissal.

1. Voluntary resignation of a minister

The question refers, first, to the personal decision to leave the office. To specify its legal requirements, it would be necessary to distinguish the communication of that will, the institutional decision that formalizes the departure, and the moment it takes effect.

The consulted sources do not include the provision regulating this sequence. Therefore, it would not be rigorous to state here that a public declaration is enough, that there is a mandatory notice period, or that the departure takes effect from the submission of a letter. Nor is there a parliamentary authorization requirement for this situation. This absence of information should not be interpreted as proof that a certain requirement exists or does not exist.

2. Individual dismissal of a minister

Individual dismissal must be separated from the political responsibility demand to the entire Government. To explain its requirements precisely, it is necessary to identify who initiates the decision, who formalizes it, and by what act it becomes effective.

The consulted sources do not include the applicable provision for the appointment and separation of ministers nor an official example that allows documenting these formalities. Therefore, I cannot reliably attribute a specific procedure, an obligation to justify, or a list of legal causes for dismissal.

It is also advisable to differentiate the possible political consequences of conduct from its legal consequences. A resignation request, a public controversy, and a judicial resolution are different facts; it should not be stated that any of them automatically causes loss of office without identifying the norm that establishes that effect.

3. Government responsibility before Congress

It is established that the motion of censure allows Congress to demand political responsibility from the Government. According to the consulted explanation of article 113 of the Constitution, it must be presented by at least one tenth of the deputies —35—, include an alternative candidate for the Presidency, and obtain an absolute majority. It is not, therefore, a procedure described to dismiss a minister individually.

The vote of confidence is different: it can only be raised by the Prime Minister before Congress, linked to their program or a general policy statement. It is passed by simple majority. If confidence is not obtained, the Government must resign and the procedure to appoint a new president begins. It also does not equate to an individual ministerial resignation.

4. What conclusion can be drawn

The supported conclusion is that the individual departure of a minister and the fall of the Government do not have the same procedure. The previous parliamentary thresholds correspond to collective mechanisms and should not be presented as requirements for a minister to leave their post.

To close the answer about individual resignation or dismissal, it is necessary to contrast the specific current regulation. In particular, it is not documented here what act formalizes the departure, when it becomes effective, nor what consequences incompatibility or judicial disqualification have.