Tempi Changes: From Fours to One-Tempis

Tempi changes are sequences of flying changes ridden at fixed intervals: every fourth stride (four-tempis), every third (three-tempis), every second (two-tempis), and finally at every stride — the one-tempi changes of Intermediate II and Grand Prix, in which the horse appears to skip down the diagonal. Each tightening of the interval halves the horse’s time to rebalance, so the ladder from fours to ones is a progressive examination of straightness, balance and confidence in the aids, built on the single flying change.

The ladder and where it appears

At Prix St Georges the three-tempis are ridden on the diagonal, usually five changes; Intermediate I brings the two-tempis; and the Grand Prix asks for a line of one-tempis whose required count is printed on the test sheet (fifteen in recent editions). The FEI youth divisions climb the same ladder: the Young Rider tests, at Prix St Georges standard, include changes every fourth and third stride, so a youth-team rider meets the sequence work years before senior sport.

What a tempi line examines

A line of tempi changes is scored as a single mark, and the design is deliberate: the mark measures the weakest change in the line, not the average. What the sequence exposes, interval by interval:

Straightness. A horse minutely crooked in the single change becomes visibly crooked by the third change of a sequence, because each change launches from the landing of the last. Quarters swinging left and right down the line is the fault a judge at C reads the length of the arena away.

Equal strides between changes. The strides between changes must stay uniform and forward. Shortening or shuffling to fit the count in (the horse compressing its canter to survive the sequence) is penalised as a loss of quality even when the count is correct.

The count itself. The required number of changes must be shown, ending at the prescribed point. A miscount is an error in the movement, and in the Grand Prix zig-zag the final change must fall at its marker.

Calm rhythm. The canter continues as if the changes were not happening. Anticipation (the horse starting the sequence before the aid, or throwing extra changes in later movements) is the price of drilling, and it leaks from the movement mark into the submission collectives.

The one-tempis

Changes at every stride are a coordination task of a different order, because the rider must ask for the next change while the current one is still in the air, and the horse must land each change already organised for the next. The FEI standard for series holds unchanged: light, calm and straight, with lively impulsion, in the same rhythm and balance throughout. Well-ridden one-tempis read as effortless skipping; the reality underneath is a canter of exceptional straightness and adjustability, maintained while the horse’s balance is deliberately disturbed at every stride.

Many otherwise capable horses take a year or more to confirm the one-tempis, and some never do, a genuine selection factor for any horse intended for Grand Prix, and one of the education’s last acquisitions alongside the piaffe-passage work, as described in the finished horse. In the freestyle, riders raise the difficulty further by riding tempi lines on curved lines and circles, which the degree-of-difficulty mark rewards when they succeed.

How the sequences are built

The professional route is uniform in outline. The single change is confirmed first (straight, calm, equal on both reins), because every fault in it multiplies down a sequence. Fours are introduced on the diagonal, where the line is long and the horse balanced; the interval closes to threes and twos over months as each stage confirms; and the ones are developed last, often beginning with two or three changes and extending the line gradually. Trainers guard against the two standing risks throughout: crookedness, which must be corrected at the single change rather than inside the sequence, and anticipation, which is managed by varying lines, counts and placement so the horse waits for the aid.

Common faults and what they cost

• A late change inside the line caps the single mark for the whole sequence: the line is judged as one movement.
• Swinging quarters down the line: the classic straightness fault, most visible in the ones.
• Unequal or shortened strides between changes, trading canter quality for the count.
• Miscounts and misplaced final changes, marked as errors in the movement.
• Anticipation, costing the movement and echoing in the collective marks.
• Croup-high changes in sequence, reading as tension or insufficient canter quality: the same faults catalogued for the single change, compounded by repetition.

Sources

• Fédération Équestre Internationale — FEI Dressage Rules, 26th edition, 2026. https://inside.fei.org/fei/disc/dressage/rules
• Fédération Équestre Internationale — Dressage Tests, 2026. https://inside.fei.org/fei/your-role/organisers/dressage/tests
• British Dressage — International competitions (Young Rider test content), 2026. https://www.britishdressage.co.uk/get-involved/bd-youth/competing-with-bd-youth/international-competitions/
• United States Dressage Federation — Purpose of Tests, 2023. https://www.usdf.org/EduDocs/Training/purposeoftests.pdf