There has been talk about restricting land entries to three but according to this article it is only one....
Final crackdown for border runners - New strict Immigration regulation in force from today - Thai visas, residency and work permits - Thailand ForumFrom today, foreign nationals residing in Thailand will no longer be able to exit and then re-enter the kingdom via a land border crossing in order to gain another 30 or 15 day stay in Thailand.
Thaivisa has been in contact with the Immigration Bureau who confirm the new regulation starts from today Saturday May 10, 2014.
This latest news follows reports from earlier in the week of an Immigration crackdown at the land border checkpoint in Ranong.
Non-Immigrant Visa or Tourist visa holders with remaining entries on their visa can exit and enter Thailand as before.
However, these new measures are targeting foreign visitors without a visa who are regularly entering and exiting the kingdom every 15 or 30 days as a way of extending their stay in Thailand.
From today visitors can only enter into Thailand via a land border once, after that they will be refused entry to the Kingdom and are advised to fly out and return with a visa obtained from a Royal Thai Embassy or Consulate in a neighbouring country or overseas.
The Immigration Bureau has also confirmed to Thaivisa.com that further restrictions are to be enforced from August 12, 2014.
It is understood that the new regulation is to prohibit back-to-back border runners who stay for an extended time in the country without a proper visa from a Consulate or Embassy abroad or an extension of stay granted by the Immigration Bureau in Thailand.
With regards to the new restrictions on land border crossing, which as mentioned above are effective as of today, a number of Thaivisa members have confirmed to us that these restrictions are being enforced at the Mae Sai border crossing in Chiang Rai province, with some members commenting they are stranded at the border unable to enter Thailand.