Travel restrictions are rules set by governments that limit or control the movement of people across borders. These restrictions can be implemented for various reasons, including health concerns, security issues, or political situations. For example, during the COVID-19 pandemic, many countries imposed travel bans or required travelers to show proof of vaccination or negative test results to prevent the spread of the virus. Travel restrictions can vary widely from one country to another and may change frequently based on current events. Travelers should always check the latest guidelines from official sources, such as government websites or the World Health Organization, before planning their trips to ensure compliance and safety.