What are the limitations on entering Thailand under a visa exemption?

Entering Thailand on a visa exemption allows for a maximum of 3 entries within a 6-month period, but specific rules apply based on the mode of entry. By land, there is typically a limit of 2 entries per year, while entry by air does not have an official limit, although excessive entries may raise questions from immigration officers. Tourists are generally not expected to stay for extended periods (like 6 months) on this exemption; travelers who repeatedly max out their visa exemption could risk being denied entry.