Deontology, particularly Kantian ethics, places a strong emphasis on respecting individual autonomy and the inherent worth of persons, requiring engineers to act in ways that respect people's rights and choices.

Utilitarianism, as formulated by Jeremy Bentham and John Stuart Mill, holds that the morally right action is the one that produces the greatest amount of happiness or well-being for the greatest number of people affected by the action.

Virtue ethics, as expounded by Aristotle, emphasizes the importance of developing good character traits, such as honesty, integrity, courage, and compassion, as a foundation for ethical decision-making and action.

Care ethics places central importance on relationships, interdependence, and empathy, recognizing the significance of caring for others and promoting their well-being in ethical decision-making.

Sustainability ethics, a relatively recent development in engineering ethics, focuses on the ethical responsibilities of engineers to consider the long-term consequences of their decisions and actions, particularly their impact on future generations and the environment.

The principle of non-maleficence, often considered a fundamental ethical principle, requires engineers to avoid causing harm or injury to others through their actions or decisions.

The principle of beneficence, complementary to non-maleficence, requires engineers to actively seek to benefit others and promote their well-being through their actions and decisions.

Distributive justice theory, a branch of social and political philosophy, focuses on the ethical principles and criteria for distributing benefits, burdens, and opportunities fairly and equitably among individuals and groups in society, including in engineering contexts.

The principle of autonomy emphasizes the importance of respecting individual rights, choices, and self-determination, requiring engineers to involve stakeholders in decision-making processes and to consider their preferences and values.

Contextual ethics, also known as situation ethics or particularism, emphasizes the importance of considering the specific context and circumstances of engineering decisions, including cultural, social, and environmental factors, rather than relying solely on universal moral principles.

The principle of accountability requires engineers to take responsibility for the consequences of their actions and decisions, acknowledging their role in shaping the outcomes of engineering projects and technologies.

Risk-benefit analysis is a systematic approach to evaluating the potential risks and benefits of engineering decisions, considering both the positive and negative consequences of various options and seeking to make informed choices that minimize risks and maximize benefits.

The principle of transparency requires engineers to be open and honest about their actions, decisions, and the information they have, fostering trust and accountability in engineering practice.

Sustainability ethics, as mentioned earlier, focuses on the ethical responsibilities of engineers to consider the long-term consequences of their decisions and actions, particularly their impact on future generations and the environment.

The principle of integrity requires engineers to act in accordance with their values, beliefs, and ethical principles, even when faced with difficult choices or pressures to compromise their integrity.