Transportation and Logistics Systems (TLSS) 10-Q 2013 Q1 Quarterly report

                                                                    Exhibit 32.1

                            CERTIFICATION PURSUANT TO

                             18 U.S.C. SECTION 1350

                             AS ADOPTED PURSUANT TO

                  SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In  connection  with the  Quarterly  Report of PETROTERRA CORP. (the "Company")  on Form 10-Q for the period  ended  June 30,  2012 as filed with the Securities  and  Exchange  Commission  on the date  hereof (the  "Report"),  the undersigned,  in the  capacities  and  on  the  dates  indicated  below,  hereby certifies pursuant to 18 U.S.C. Section 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that to his knowledge:

     1.   The Report fully  complies with the  requirements  of Section 13(a) or

          15(d) of the Securities Exchange Act of 1934; and

     2.   The  information  contained  in the  Report  fairly  presents,  in all

          material respects,  the financial  condition and results of operations

          of the Company.

Date: August 20, 2012

/s/ Larysa Dekhtyaruk

__________________________

Larysa Dekhtyaruk, President,

Chief Executive Officer and

Chief Financial Officer