Bangkok--20 Nov--SET The Stock Exchange of Thailand (SET) has noted that there have been extraordinary increase in price and trading value of TRAFFIC CORNER HOLDINGS PUBLIC COMPANY LIMITED "TRAF" ("Company") securities under high speculation during Nov 15 to 20, 2007 compare to previous period without any supportive material information. To prevent such negative repercussions, member firms of the SET are hereby prohibited from providing both net settlement trading and margin loans trading for the company's securities. This prohibition shall be effective during Nov 21, 2007 to Jan 8, 2008