Five horizontal stripes of red, white, blue, white and red, the middle stripe twice as wide as the others. The flag name called "Thong Trairong" (Thai: ธงไตรรงค์—also referred as "Trairanga") which means the tricolour flag.
Originally, Vajiravudh assigned this flag as a civil flag. He also stipulated that a separate flag for each government ministry be made by charging additional emblem onto the center of the flag.
Yellow flag (the King's birthday colour), the middle the depicts the Royal Cypher (ว.ป.ร.: มหาวชิราลงกรณ ปรมราชาธิราช : Mahavajiralongkorn Paramarajadhirajatiraj (Thai equivalent to Vajiralongkorn Rex), topped by the Great Crown of Victory, in between is the Thai symbol for Aum.
A national flag with the emblem of Royal Thai Navy in the center: a chakra inserted with an anchor under the Thai royal crown. The design is identical to Thai naval unit colours. Note that all Thai Army, Navy and Air Force unit colours called "Thong Chai Chalermphol" (ธงชัยเฉลิมพล).
Maroon red flag with the emblem of the Thai National Police in the center.
Royal Thai Police Colour
A paramilitary colour for some police unit. The design is similar to the military unit colour named "Thong Chai Chalermpol" but in the middle of the flag there is an charge of the Coat of Arms of Siam in reign of King Chulalongkorn with the word “to protect the people’s peace” (พิทักษ์สันติราษฎร์ - pronounce "Pitak Santiraj")
Pitak Santiraj flag
An honor flag of the Royal Thai Police according to the Thai flag act of B.E. 2522 (1979 A.D.). It has the same characteristics and colors as the National Flag but in the middle of the flag there is an charge of the National Emblem of the Reign of His Majesty King Chulalongkorn with the word “to protect the people’s peace” (พิทักษ์สันติราษฎร์ - pronounce "Pitak Santiraj") embroidered in silver metallic threads embracing the underside of the National Emblem.
Triranga defaced with a red disc containing dressed white elephant, facing a flagpole. Briefly, its appearance is the same as naval ensign, but both red banners of the flag contains a stanza from a Buddhist chant in Pali, written in Thai script: "พาหุํสหัส์สมภินิม์มิตสาวุธัน์ตํ ค๎รีเมขลํอุทิตโฆรสเสนมารํ ทานาทิธัม์มวิธินาชิตวามุนิน์โท ตัน์เตชสาภวตุเมชยสิทธินิจ์จํ".
Triranga defaced with a red disc containing King Vajiravudh's personal emblem. The emblem features Thai acronym "ร.ร." and Thai digit six ("๖"), both are displayed under the glowing crown. Both red banners of the flag contains the same chant in Thai script as the obverse.