2023 Formula SAE Japan Local Rules Number 1
Issued: December 20, 2022
The purpose of this document is to inform of the local rules that must apply to 2023 Formula SAE Japan. Any
additional local rules that become necessary must be posted on the FSAEJ official website as they become available.
These local rules are valid for 2023 Formula SAE Japan only.
Formula SAE Japan Rules Committee
J2023-1-01

Relaxation of Rules for Year Vehicle (refer to Formula SAE® Rules 2023 GR.7.2.2, FSAEJ 2023

Participation Rules Article 10)
A vehicle is considered as First Year Vehicle when the team checked in at the reception of the FSAEJ event withthe vehicle, not when the team registered.
J2023-1-02

Eligibility for Second Year Vehicle (refer to Formula SAE® Rules 2023 GR.7.3.2, FSAEJ 2023

Participation Rules Article 10)
As for EV Class, teams may use their chassis (frame and/or monocoque) built for the 2022 Formula SAE Japan
event if the chassis meets or is modified to meet the applicable Formula SAE® Rules 2023.
J2023-1-03

Baseline Steel Material (refer to Formula SAE® Rules 2023 F.3.4.2)

The baseline steel material must be a material that satisfies the following condition.
Mild or alloy steel with a minimum tensile strength of 290 N/mm2 as guaranteed by a mechanical strength
standard. The “STKM11A” is one of them.
J2023-1-04

Requirements for Custom Impact Attenuator (refer to Formula SAE® Rules 2023 F.8.4.2)

Add the following to F.8.4.2 as e.
e.

Designed with a closed front section.

J2023-1-05

Standard Foam Impact Attenuator (refer to Formula SAE® Rules 2023 F.8.7.3d)

DuPont Styro Corporation's DX-45 is considered equivalent material to IMPAXX™ 700 for Standard
Foam Impact Attenuator.
J2023-1-06

Thickness of the floor or bottom for Accumulator Container (refer to Formula SAE® Rules 2023F.10.2.1.b)
An aluminum sheet thickness of 3.2 mm (0.125 inches) is accepted up to a negative tolerance of 10%.
J2023-1-07

Accumulator Attachment – Interpretation of Corner Attachments (refer to Formula SAE®

Rules 2023 F.10.5.6.b)
The phrase “the corner of the segment” in the Formula SAE® Rules may also be interpreted as “the corner ofthe container”.

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FSAEJ RULES COMMITTEE

J2023-1-08

Method of Inspection for Cockpit Opening and Internal Cross Section (refer to Formula SAE®

Rules 2023 T.1.1.1, T.1.2.1)(1) Template T.1.2.1 may be moved vertically within 50 mm only in order to avoid interference with the rackand pinion unit.
(2) Template T.1.2.1 may be split into left and right sections to enable inspection even when the rack and pinion
unit is positioned on the lower frame. In other words, the slit in template T.1.2.1 may be extended to the topand bottom sides.
(3) Template T.1.2.1 must be placed perpendicular to an axis formed assuming a straight line from the cockpit tothe pedals and moved parallel to that axis. During this movement, template T.1.2.1 may be rotated within ±45
degrees around the back and forth axis.

(4) The splined part of the steering shaft may be excluded from the inspection range of Template T.1.1.1.
J2023-1-09

Driver Harness Installation (refer to Formula SAE® Rules 2023 T.2.5 - T.2.7)

The eyebolts used to attach the driver harness must meet JIS standard B1168-1994.
The diameter of the hook part of the M10 and M8 eyebolt must satisfy 8 mm (6.3 mm).
J2023-1-10

Relaxation of Requirement for Use of Sensors with Different Transfer Functions as Accelerator

Pedal Position Sensors (APPS) (refer to Formula SAE® Rules 2023 T.4.2.2, T.4.2.3)
APPS does not need to satisfy the rule T.4.2.3.

J2023-1-11

JSAE Logo (refer to Formula SAE® Rules 2023 VE.1.3)

The Society of Automotive Engineers (SAE) logo as specified in the Formula SAE® Rules must be replaced by
the logo of the Society of Automotive Engineers of Japan (JSAE). In other words, teams must display the JSAE
logo in a prominent location on the front and/or both sides of the vehicle. The JSAE logo stickers to be supplied
to the teams at the competition site have approximate dimensions of 210 mm (width) × 115 mm (height).
J2023-1-12Size of Technical Inspection Stickers (refer to Formula SAE® Rules 2023 VE.1.4)

The stickers indicating that the technical inspection has been passed are divided in parts, with total dimensionsof 150 mm (width) × 100 mm (height).
J2023-1-13

Transponder (refer to Formula SAE® Rules 2023 VE.1.5)

Any transponder is NOT used in 2023 Formula SAE Japan.
J2023-1-14

Quick Jack (refer to Formula SAE® Rules 2023 VE.2.1)

It must be possible to move the vehicle at all times using the quick jack shown in the APPENDIX J-1 without
any additional manual effort. It must also be possible to utilize the quick jack without interfering with the vehicle
body (i.e., the cowling, undercover, and so on).

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J2023-1-15

Fire Extinguishers (refer to Formula SAE® Rules 2023 VE.2.3)(1) Teams may use fire extinguishers with NO pressure gauge. However, each fire extinguisher must be within its
expiration date and the operation lever seal must be in place. For fire extinguishers without a displayed
expiration date, it must be within 5 years since the date of manufacture.
(2) The fire extinguishers should be 3-ABC type(3) There is no problem when CO2 type is used outside, but there is a risk of suffocation when used indoors suchas garages.
Therefore, care must be taken. (Ex of security: Preparing indoor & outdoor products.)"Refer to http://www.maruyamaexcell.co.jp/0021/05fire/pdf/CO2.pdf "J2023-1-16

Driver’s Equipment (refer to Formula SAE® Rules 2023 VE.3)

The equipment in accordance with the latest standards which is equivalent or safer than Formula SAE® Rules
2023 is accepted.
J2023-1-17

Fuel Allowed at FSAEJ (refer to Formula SAE® Rules 2023 IC.5.1.1)

The fuel provided is only unleaded gasoline with Research Octane Number (RON) of 100.
J2023-1-18

Fuel Supply (refer to Formula SAE® Rules 2023 IC.5.2)

Teams may fully refuel the tank of the vehicle at the fueling station before undergoing the Technical Inspections.
J2023-1-19

Fuel Tank and Exhaust Pipe distance (refer to Formula SAE® Rules 2023 IC.5.2.3)

Teams must secure the clearance of the fuel tank and exhaust pipes to be no less than 50 mm.
Otherwise (if teams cannot secure a clearance of 50mm), teams must add the heat shields with fireproof equal
to that of a fire wall, which prevents the temperature of the fuel from being above 50% distillate temperature of
JIS standard K2202-2012 during the vehicle is running, OR the evidence of its performance are required.
J2023-1-20Extracting fuel from the Fuel Tank (refer to Formula SAE® Rules 2023 IC.5.3.5)

The Fuel System must have a provision for emptying the Fuel Tank without any electric motor pump.
J2023-1-21

Coloring of Master Switches (refer to Formula SAE® Rules 2023 IC.9.4)

In ICV Class, the Master Switches must be red.
The cockpit-mounted switches except the Master Switch must NOT be red.

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J2023-1-22

Energy Meter Specification (refer to Formula SAE® Rules 2023 EV.4.3.1 , AD.2.2.1)

EV teams must use the Energy Meter distributed by the Competition Organizer for the Dynamic Event.
The Specification of that, Formula Student Germany FSE2016 Energy Meter, will be on the team page.
The following texts in the FSE2016 Energy Meter Specification must be read as specified.
“FSAE2016 Rule EV4.8”-->”FSAE2023 Rule EV4.3”,”If there are any questions, please do not hesitate to submit a rules question at the FSG website”-->”If there are any questions, please do not hesitate to submit a rules question at the FSAEJ website”"The fourth connector, shown on the left side of the Energy Meter" will not be provided by the Competition
Organizer. Teams must provide their own.
J2023-1-23

Scatter Shield (refer to Formula SAE® Rules 2023 T.5.3.2)

The small gap between the Scatter Shields neighboring the hole of the motor casing is allowed. As for the holeon a vertical surface to the rotation axis, the Scatter Shield is unnecessary.
J2023-1-24

Relaxation of Prohibition of Cell Balancing when Accumulator Isolation Relays (AIR) Are Open

(refer to Formula SAE® Rules 2023 EV.6.4.3, EV.8.3.3)
AMS excludes the application of EV.8.3.3 for cell balance function.
J2023-1-25

Relaxation of Rule Relating to Placement of Temperature Sensor at Cell Negative Terminal(refer to Formula SAE® Rules 2023 EV.8.5.3, EV.8.5.4)
If the team uses a ready-made Accumulator consisting of assembled cells (segments) and built-in temperature
sensor without modification, Accumulator temperature sensors exclude the application of EV.8.5.3 and EV.8.5.4.
If so, the team must state this to the Electrical Systems Form (ESF) and obtain the approval by the judges.
J2023-1-26

Relaxation of Requirement for Electrical Connections to Use Positive Locking Mechanisms(refer to Formula SAE® Rules 2023 EV.7.4.3)
The requirement to use Positive Locking Mechanisms described in EV.7.4.3 is regarded as satisfied if thefollowing conditions are all met.
Conditions: - The team can clearly demonstrate that the reasonable axial force or the contact pressure has been
applied to the connections during the Electrical Technical inspection. (A record of the fastening
torque or riveting bonding force is acceptable.)- Furthermore, the structure must allow no application of external force (tension, torsional, orflexural) from the wiring to the connection.
J2023-1-27

Coloring of Shutdown Buttons (refer to Formula SAE® Rules 2023 EV.8.10)

EV Shutdown Buttons must be red. Other than the cockpit mounted Shutdown Button, switches installed in thecockpit must not be red nor orange.

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J2023-1-28

Relaxation of Requirement for the Overcurrent Protection in the multiple parallel battery cells(refer to Formula SAE® Rules 2023 EV.7.6.3)
In the case of using parallel connected cells / strings, if each parallel cell / string has an overcurrent protection
device designed to protect when all the current flows through only one side of the cell / string, then theovercurrent protection device excludes the application of EV.7.6.3.
.If so, that must be stated on the Electrical Systems Form (ESF) and approved by judges.
J2023-1-29 Relaxation of Rules for EV Chargers (refer to Formula SAE® Rules 2023 EV.9.2.4, EV.9.4.1)
If the team understands and can execute all of the following (1) to (3), do not apply ① to ③ to the vehicle.
(1) The team describes the "charging procedure" and "charging abnormality procedure" in the Electrical System
Form (ESF) and obtains the approval by the judges.
(2) When the team charges, carry the Electrical System Form (ESF) with the necessary points in (1).
(3) When the team charges, it must be possible to handle the abnormality according to the "charging abnormalityprocedure".
① Interlock function related to the connection status of the connector specified in EV.9.2.4.
② Function to turn off the charger by AMS specified in EV.9.4.1③ Function to turn off the charger by IMD specified in EV.9.4.1
J2023-1-30

Driver Egress Test (refer to Formula SAE® Rules 2023 IN.5.2)

In the Driver Egress Test, the direction of egress (i.e., to the left or right of the vehicle) must be instructed by
the judges at that time.
J2023-1-31

Sound Measuring Procedure for CVT-Equipped Vehicles (refer to Formula SAE® Rules 2023IN.10.1.1)
Teams using a vehicle equipped with a CVT without a neutral position must prepare an apparatus that can safely
hold the driving wheels in a completely floating state during sound measurement.
J2023-1-32

Sound Measuring Procedure (refer to Formula SAE® Rules 2023 IN.10.1.2)

There is no change to the measurement speed for engines used in 2023 Formula SAE Japan. The measurement
speeds for other engines must be released on the team page later. The location of the microphone at an angle of45° with the outlet in the horizontal plane must be instructed by the judges at that time.
Measuring time will be within 5 minutes from the microphone set up.
J2023-1-33

Remeasurement of Noise （refer to Formula SAE® Rules 2023 IN10.4.3, IN10.5）(1) The vehicle that completed the Endurance Event is subject to the noise test.
(2) The method of the noise testing applies IN.10.1.2 and local rule J2023-1-35 correspondingly.
(3) It calls a penalty as follows according to measurements.
・Up to +1dB of Reference Value(RV) is NO penalty.
・Over +1dB up to +2dB of RV is a penalty of 10 points.
・Over +2dB of RV is a penalty of 20 points.

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J2023-1-34

Seals for the Rain Test (refer to Formula SAE® Rules 2023 IN.4.7.1, IN.11)

The judges seal the vehicle in two stages.
Items 1 will be sealed before the rain test.
Items 2 will be sealed after the rain test passed.
Items 1: The items checked at the Electrical Technical Inspection (Accumulator Container(s), Motor, etc.).
Items 2: The items attached to the vehicle for waterproofing (tapes or the like).
Teams must retake the following inspection if these seals are peeled off.
Items 1: Simplified Electrical Technical Inspection for the related parts. The Rain test again in some cases.
Items 2: The Rain test again.
J2023-1-35

Technical Inspection After the Endurance (refer to Formula SAE® Rules 2023 IN.15, D.14.1)

The vehicles may be re-inspected after the Endurance and refueling are completed.
J2023-1-36

Relaxation of BSPD inspection methods(refer to Formula SAE® Rules 2023 EV.8.7.4)

The BSPD test excludes the application of EV.8.7.4 b.
If so, that must be stated on the Electrical Systems Form (ESF) and approved by judges.
J2023-1-37

Relaxation of insulation distance when integrated circuits are used such as opto-couplers (referto Formula SAE® Rules 2023 EV.7.5.7)
Even if integrated circuits such as opto-couplers are used, the prescribed insulation distance described inEV.7.5.7 does not apply within the integrated circuit package.
J2023-1-38

Spare Accumulators (refer to Formula SAE® Rules 2023 EV.6.1.4)

If spare Accumulators are to be used, they all must be of the same size, weight and type as those that are replaced.
J2023-1-39

Relaxing galvanic insulation per boundary between AMS segments (refer to Formula SAE®

Rules 2023 EV.8.3.2)
When using a commercial AMS with a data sheet without modification, the AMS excludes EV.8.3.2.
If so, that must be stated on the Electrical Systems Form (ESF) and approved by judges.
J2023-1-40

Relaxing the shape holes and Openings for airflow (refer to Formula SAE® Rules 2023 F.10.4.4 a)

The shape holes and openings for airflows excludes the application of F.10.4.4 a.

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J2023-1-41

Proving Upper Side Impact Member and IA height (refer to Formula SAE® Rules 2023 F.6.4.4,F.8.5.6)
The followings are accepted at the Technical Inspection:(1) Photo evidenceTeams may bring photo evidence shown in APPENDIX J-2 and skip the measurement.
(2) Team proposed measurement methods
Teams may propose measurement methods if they are appropriate. If none of the above is presented, theTechnical Inspectors indicate the measurement methods, and teams must follow them.
J2023-1-42

Ready-To-Drive-Sound(refer to Formula SAE® Rules 2023 EV.10.5)

The car does not need to make a Ready to Drive Sound.
J2023-1-43

Energy Meter data download for Acceleration Event, Skidpad Event, and Autocross Event (referto Formula SAE® Rules 2023 EV.4.4.2)
Each team must bring their vehicle to the data download area in the Dynamic Area for Energy Meter data
download for Acceleration Event, Skidpad Event, and Autocross Event. Energy Meter data download time will
be from the start to 15 minutes after the end of each event. Energy Meter data must be downloaded within thedesignated time. Failure to complete the data download within the designated time results in a Violation due tomissing Energy Meter data due to the team's fault in accordance with EV.4.4.2.
J2023-1-44

Energy Meter initialization for Endurance Event (refer to Formula SAE® Rules 2023 D.12.3.2,D.12.4.1)(EV only) Each team must bring their vehicle to the data download area in the Dynamic Area for Energy Meter
initialization prior to staging per the Endurance Run Order.

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FSAEJ RULES COMMITTEEAPPENDIX J-1 (J2023-1-13) Quick Jack

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FSAEJ RULES COMMITTEEAPPENDIX J-2 (J2023-1-40) Proving Upper Side Impact Member and IA height
Photo evidence

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Revision Record:

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