2) Scoring items in battle run(1) Evaluation of the car ahead
a. The car ahead will be evaluated in the same manner as the car running alone, with priority given
to line and speed, but any unnatural movement will be subject to penalty points.
b. Points will be deducted for any off-course driving as a violation.

B
Appendix-

C1
Appendix-

C2
Appendix-

D1

Appendix-

D1
Appendix-

D2
E

Appendix-

F

Appendix-(1) Scoring factors for fast running speeda. On the premise of running in the track, high speed in all parts of the track will be highly evaluatedand reflected in the scoring.
b. Any significant decrease in speed during the competition run will result in a significant pointdeduction.
c. Designated zones and running lines may also be a factor in speed evaluation, since judging speed
by appearance requires running on the same line.

Appendix-

C2

2. scoring items
1) Scoring Items for Single Run
Scoring points shall be explained in detail by the judges of the competition at the drivers' briefing prior
to the qualifying round, based on the course map.

3. Scoring Criteria for Single RunThe scoring will be based on the following criteria, with 100 points given for a level of driving that is
considered perfect under the competition conditions. The details of the scoring evaluation are based on
the table below.
1) The full score for a fast running speed is 10.00 points.
2) A full score of 10.00 points shall be given for a stable large angle.
3) Sharp swing shall be evaluated on a 7-point scale from 0 to +3 points.
4) The calculation method is: 1) score x 2) score + 3) score.
Example: 9.8 x 9.7 + 0.5 = 95.56
5) Either one or more judges shall score 1) to 3) above in the same manner and average them, or one
judge shall be in charge of 1), 2), and 3), and the total score shall be calculated in the same manner asin the example in 4).
6) If any points are deducted due to infractions, etc., the final score shall be the total of the points
including the deduction.

D2

Appendix-4) Driving must be within the specified track, and the entire scoring section will be evaluated.

Appendix-C1

Appendix-3) Stable large angle
The drift angle indicates the directional angle of the vehicle relative to the line of travel, and the driver
must maintain as large an angle as possible while cornering at a stable angle.

EB

Appendix-2) Sharp swing
Quickness, precision, and appropriate timing are required when entering the drift (swing out) and whenswitching sides of the drift angle (swing back).

Appendix-A

1. The following factors are used to evaluate drifting techniques
1) Fast driving speed
The driving speed must be as fast as possible in any part of the course. Drifting angle and speed areinversely related, but the speed must be as fast as possible while maintaining a large angle.

(2) Evaluation of chase vehicles
a. Speed
The speed within the scoring section is evaluated in comparison with the vehicle ahead. If thedistance between the vehicles is reduced while the angle is the same or greater, the speed isjudged to be higher.
b. Angle
The relative drift angle compared to the vehicle ahead is the object of evaluation.
c. Proximity
i. Proximity methoda) No points will be deducted for failure to close the distance between vehicles, but points
will be deducted for opening the distance between vehicles with the same or smaller angle
within the scoring section.
b) If a vehicle approaches a distance at an angle equal to or greater than that of the vehicle
ahead, it will be a point-earning factor.
ii. Continuous driving distanceThe distance and continuous running distance time of the car following the car at the sameor greater angle as the car ahead will be used to determine the degree of scoring for the carfollowing the car behind.

FAppendix-<Definition of Battle Run Competition>
The Battle Run competition is a competition to see how well the car following the car ahead can matchthe car's single-track performance and outperform it in terms of drift angle, high speed, sharp swing, andstable large angle, as well as to see how close the car can get (i.e., running together inside the car ahead ina drifting state).

Appendix-

D1 Regulations<Definition of Single-Run Competition>
The Single Race is a competition of driving skills to drive faster with a larger and more stable drift angle
and to switch angles more quickly within a defined curved course.

D1 Regulations

Scoring will be based on the following evaluation criteria in accordance with the definitions for the singleand battle events.

D1 Scoring CriteriaA(3) Scoring Factors for Stable and Large Angle
a. Whether or not a stable large drift angle is maintained while maintaining a smooth drift run.
b. The larger the angle, the better. However, if the angle returns, points will be deducted as amistake. c. Temporary large angles will be deducted as a mistake.
c. Temporary large angles will not be evaluated.
d. Designated zones and running lines may also be a factor in angle evaluation, since angle
determination by appearance may require running on the same line.

Appendix-Revised January 1, 2024

D1 Regulations Appendix-B(2) Factors for scoring sharp swinga. Lack of quickness in swinging out and swinging back shall be subject to point deductions.
b. Delay in timing of the start and return of the swing will result in a point deduction.
c. Points will be deducted if the angle is not determined after the start and return of the swing.

282024 D1 Scoring Criteria

2024 D1 RULE BOOK

29

B

0-3 point
7 stepsWas there a delay drift, and the extent.
Was there no determination of drift angle, and the extent.
Was there a twice drift.

C1

Appendix-Was there a challenging, and the extent.

C2

Appendix-

4. scoring criteria for battle run competitions (when using mechanical scoring)
1) When a measuring and scoring device is introduced for judging, the entire scoring system must be
officially approved by the D1 ASSOSIATION, in which case the measured values will be considered final.
2) The scoring of D1 single runs shall include, at a minimum, the determination of the following elements:
fast running speed, sharp swing, stable large angle, and off-track running violations.
3) In addition to the above, the scoring of the battle run shall require judges to determine vehicle spacing
and causal factors, and causal factors of changes in driving conditions.
4) For scoring elements that cannot be covered by measurement scoring, judges may be assigned only forthe relevant scoring elements. In such a case, the criteria for the judges' scoring must be specificallyindicated prior to the competition.
5) In principle, scoring elements that can be scored by measurement shall be scored only bymeasurement.
6) The judges shall explain to the competitors before the competition what kind of driving will result inhigher scores.
7) In a measurement scoring event, competitors must prepare their vehicles so that they can install themeasurement device for scoring in the designated area of the competition vehicle. They must not touch
the measuring devices unless instructed to do so by the competition officials.

D1

Appendix-

D2

Appendix-E

Appendix-

FAppendix-

5. scoring criteria for Battle Run competition (during subjective judging)
In the battle run, the following vehicle is judged as superior or inferior to the vehicle ahead. In addition,
the relative distance between the following vehicle and the vehicle in front is taken into account as a
judging factor.
In the battle run competition, the driving levels of the car ahead and the car behind are evaluatedaccording to 10 basic ranks, and the winner is determined by adding up the driving ranks of the car ahead
and the car behind.
1) Determination of the driving rank of the car ahead
The car ahead is required to drive in the same manner as a single run, and its 10 driving level ranks are
determined based on the scoring of the single car in Section 3. The evaluation of the following vehicle isdetermined by adding or subtracting the relative rank difference from the preceding rank.
302024 D1 Scoring Criteria

Drift
angle
andthespeed

Drift
back＋

Distance between cars was increased after drifting.
(Invalid if the drift angle of leading vehicle was small unquestionably.)
Distance between cars was not increased, nevertheless the drift angle is big
unquestionably.
Close to leading vehicle, but maintaining small drift angle.
Getting close to leading vehicle by drifting.
(Invalid if the drift angle of following vehicle was small unquestionably.)
The distance between cars increased by drifting.
(Invalid if the drift angle of leading vehicle was small unquestionably.)
Start drifting back at the same time with leading vehicle.
The movement of drift back is sharper than leading vehicle.
Became disadvantageous becaue of leading vehicle's timing of mistaking
drift back.
There was less wamble, back of counter, understeer, half spin, half spin
than leading vehicle.

If you drive off course.

(Invalid if leading vehicle blocked the driving line, or In case of contact.)

D1 Regulations＋

Close to leading vehicle after drifting.

A−

The angle of drift is bigger than leading vehicle unquestionably.

Appendix-

Start drifting after the possision of leading vehicle start drifting.

−＋B

Appendix-Was there a quick drift, and the extent.
Sharp
drift
evaluation＋

Appendix-Was there a drift under, and the extent.

Resultofdrift

Even

Start drifting at the same time or earier with leading vehicle.

−＋C1A

Appendix-

Stablebig angle
evaluation

Start drifting at almost the same possision with leading vehicle.

−Appendix-

10.00 point

Using side brake too much, and the extent.
Was there a disturbances in driving by shift operation error or so,and the extent.
Was there a steering correction operation significantly or so,and the extent.

Positionofdrift＋＋C2

Was there a big angle return, and the extent.

evaluation

Appendix-

D1 Regulations

Size of the drift angle and stability of it, and the extent.

Point of evaluation of following car＋−

D1

Unstable the driving line, and the extent.

Appendix-

英語要確認3) Penalty and contact judgment during a battle run and judgment for running off the course(1) If the car ahead of the car in the acceleration section obstructs the track or controls the speed, or if
the car behind the car in the pursuit puts any part of its body in front of the rear end of the car ahead
before the first swing out, it will be penalized -3 ranks or more or lose the race for infraction.
(2) If the car ahead does not leave enough room for the car behind to run, and the car behind passes
through a line with a shallow drift angle and tightens the inside of the car ahead, or if the car behind
cuts into the inside of the car ahead even though it is running side by side with the car behind, thepenalty shall be -1 to -5 ranks as an obstruction penalty for the car ahead.
(3) When closing the distance between the car ahead and the car behind, the risk is borne by the carfollowing. Slight contact itself is not a problem, but if the driver pushes the car ahead, causing it tospin, understeer, or go off the course, an unfair penalty of -3 to -5 ranks will be applied. If it causes
a dangerous situation or serious damage, it may be judged as a -5 rank or an infraction loss.
(4) If the preceding car suddenly stalls or changes its line, causing a contact situation and the carahead is at fault, an obstruction penalty of -1 to -3 ranks shall be given. In addition, if the situation isdangerous or causes serious damage, it may be judged as a -5 rank or an infraction loss.
(5) If the infraction committed during the pursuit is against sound sportsmanship, a penalty may be
given in accordance with the D1 Rules.
(6) When video replays for judging are used to make subtle judgments due to contact or spinning of twocars, the replays must be made before the judges' decision is made.
(7) In the event of any situation other than those mentioned above, the final decision shall be made by
the Chief Judge after consultation with the judges.
2024 D1 RULE BOOK

D2

Proximity to the passing point if specified .

Appendix-

No slowdowning significantly in the speed, and the extent.

E

Maintaining enoufh speed in any part, and the extent.

Appendix-

Driving speed of first drift, and the extent.

2) Determination of the driving ranks of the following vehicles
The evaluation for the evaluation points in the table below are added up during the run, and the rankdifference relative to the preceding vehicle is added or subtracted to determine the running rank of thevehicle ahead.

F

10.00 point

Fast
driving
speedevaluation

Scoring elements

Appendix-

英語要確認

Point
distribution

31