Exhibit 32.1

CERTIFICATION PURSUANT TO
18 U.S.C. §1350,
AS ADOPTED PURSUANT TO
SECTION 906 OF THE SARBANES-OXLEY ACT OF 2002

In connection with the Annual Report on Form 10-K of Image Sensing System, Inc. (the “Company”) for the fiscal year ended December 31, 2015, as filed with the Securities and Exchange Commission (the “Report”), I, Dale E. Parker, President, Chief Executive Officer and Chief Financial Officer of the Company, certify, pursuant to 18 U.S.C. §1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002, that:

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.

/s/ Dale E. Parker

Dale E. Parker

Interim President, Interim Chief Executive Officer and Chief Financial Officer

March 10, 2016

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