TL;DR:Prioritize road safety, secure money/documents, use bottled/filtered water, get travel health insurance, and follow official travel advisories.
When visiting or living in Thailand, follow these common-sense precautions: 1) Road and transport safety — avoid riding scooters if inexperienced, always wear a helmet, use reputable taxis/ride‑share apps, and allow extra time for traffic. 2) Money, ID and scams — keep passports and cards secure (carry photocopies), use ATMs at banks, agree fares in advance or use the meter, and ignore unsolicited offers that sound too good to be true. 3) Food, water and health — drink sealed bottled or properly filtered water, eat hot-cooked food from busy vendors, wash hands often, and have required vaccinations and travel health insurance. 4) Personal security and insurance — insure for medical evacuation and theft; avoid demonstrations and border crossings currently advised against; register with your embassy if staying long-term. Follow travel advisories from your government and health guidance from the CDC for up-to-date warnings and vaccine recommendations (see US State/CDC and UK FCDO travel pages).
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