Minnesota Administrative Rules
Agency 178 - Racing Commission
Chapter 7884 - HARNESS RACES
Part 7884.0180 - TIME TRIALS.

A. serum or plasma tests are required for all horses;

B. an approved electric timer is used, however, if a timing device fails during a time trial, no time trial performance record will be obtained;

C. they are held during the course of a race meeting and are officiated by stewards;

D. they are limited to two-year-olds who equal or beat 2:10, and three-year-olds and older who equal or beat 2:05;

E. they are designated on a horse's record and in the official racing program by preceding the time with "TT";

F. that when a horse has other horses accompanying it in a time trial performance, they may not precede it, be harnessed with it, or in any way be attached to it; and

G. a break during a time trial performance results in no time being given to the breaking horse.