The Right to Information Act 2005 grants citizens access to information held by public authorities, based on the fundamental rights to freedom of speech and expression and life and liberty. It requires public authorities to proactively disclose information and designate Public Information Officers to respond to information requests within 30 days. While most information must be disclosed, there are exemptions for information like national security or personal privacy. Citizens can appeal rejections to higher authorities. The Act aims to maximize transparency and minimize the need for information requests.