2023 Season 3 Release Notes [Pre-Release Version]

• Cadillac V-Series.R GTP
• Ligier JS P320
• Porsche 911 GT3 R (992)
• MotorLand Aragón (7 configs)
• Willow Springs International Raceway
• New Track Configuration: Chicago Street Course - 2023 Cup
• Dirt Racing Refresh Project
• New Spotter Calls and Updates for Race Control
• Hosted Session AI Heat Racing
• Phase 1 of Loading Time Improvements
• 3D Foliage System
• USB Audio Device Hot Swapping
• Cockpit Obstruction Removal Graphics Option
• New Damage Model for 11 Vehicles (Cadillac V-Series.R GTP, Dirt Late Model (ALL), Ligier JS P320, NASCAR Truck Series Trucks, Porsche 911 GT3 Cup (992), Porsche 911 GT3 R (992), and Renault Clio R.S. V)
• AI Racing for 8 Cars (Aston Martin DBR9 GT1, Cadillac CTS-V Racecar, Cadillac V-Series.R GTP, Chevrolet Corvette C6.R GT1, Ford GT GT2, Ligier JS P320, Porsche 911 GT3 R (992), and Radical SR10)
• AI Racing at 24 Track Configurations (Autodromo Nazionale Monza - GP without first chicane, Junior, and GP without chicanes, Chicago Street Course - 2023 Cup and Prototype, Circuit of the Americas - East and West, Irwindale Speedway - ALL FIVE Configs, MotorLand Aragón - ALL SEVEN Configs, Nashville Fairgrounds Speedway - Mini, New Smyrna Speedway, Twin Ring Motegi - East and Oval, and Willow Springs International Raceway)
• Hundreds of new and optimized official iRacing vehicle setups

iRACING UI:

Hosted Racing

• The Create Starting Grid functionality and button are now disabled whenever both Heat Racing and AI Opponent Roster are selected for an Event.

AI Racing

• AI Drivers have completed an extensive training course for participating in the Heat Racing format!
• - - Heat Racing is now available for Hosted Sessions using AI Rosters!
• - - This is a brand new feature implementation for both AI Racing and the Heat Racing format.
• - - - - It is important to note that this feature is only available for Hosted Racing events at this time. AI Drivers still need the support of real humans in their Sessions or artificial chaos would surely ensue.

Tracks

• All Track location information has been standardized and updated. All Track locations are now identified by: City, State/Province, Country.

Leagues

• Fixed an issue where the names of AI Drivers who won League Series Sessions were forgotten when viewing the League Season Schedule.

Paint Shop

• A new sponsor, Maconi Setup Shop, has been added to the Paint Shop!
• Fixed an issue with a missing font for the Stock Car Pro Series Class Cars.

SIMULATION:

Windows Support

• With the release of iRacing 2023 Season 3, the Windows 8.1 operating system is no longer able to successfully launch the iRacing application.
• - - Microsoft officially dropped support for Windows 8.1 on January 14th, 2023. As a result of this, it is no longer compatible with our software, and it will fail to launch.
• - - If you need help installing or running iRacing on Windows 10 or 11, please contact Customer Support here: https://support.iracing.com. Customer Support cannot get iRacing to work on Windows 8.1.

Race Servers

• Race Server capacity has been expanded to allow for nine different car models to be present within a Session.
• A user’s average lap time will no longer exclude laps that had been labeled as “invalid”.
• Fixed an issue where some Open Practice Race Servers were closing early due to inactivity.
• Fixed an issue where track temperatures were changing wildly if the Session was restarted (via AI Racing controls for example).

Loading

• Some adjustments have been made to how video memory resources are loaded.
• Some car loading algorithms have been optimized.

Dynamic Track

• The manner in which the dynamic track algorithm was calculated on surfaces has been improved, particularly along outside track edges.
• Fixed an issue where the visual display of some dynamic track data including dirt, marbles, and rubber was not functioning correctly on some track segments.

Race Control

• The algorithm for generating race splits based on car classes has been improved slightly.
• Short Parade Laps are now available for use at the following additional track configurations:
• - - Barber Motorsports Park - Full Course
• - - Brands Hatch Circuit - Indy
• - - Canadian Tire Motorsports Park
• - - Charlotte Motor Speedway - Roval, Roval - 2018, & Roval Long
• - - Circuit Park Zandvoort - Grand Prix
• - - Circuit Zolder - Grand Prix, & Alternate
• - - Daytona International Speedway - Oval - 2008, Road Course - 2008, & Moto - 2008
• - - Hockenheimring Baden-Württemberg - PEC - Outer
• - - Indianapolis Motor Speedway - Oval - 2009, Open Wheel Oval - 2009, Road Course - 2009, & Bike
• - - Long Beach Street Circuit
• - - Mount Panorama Circuit
• - - Phillip Island Circuit
• - - Talladega Superspeedway

Qualifying Scrutiny

• The Qualifying Scrutiny system has been adjusted to better handle cases where cars needed time to get up to speed after leaving their starting location.

Dirt Racing

• A variety of updates as a result of the Dirt Refresh Project have been enabled!
• - - This project enlisted a focus group of developers, vehicle dynamicists, and testers who did a deep dig through everything that makes our Dirt Racing tick, and they’ve emerged with some sweeping improvements and updates.
• - - Dirt track parameters as a whole have been updated, including:
• - - - - Racing dirt properties at all levels of wear and wetness
• - - - - Dirt height variance, depth, and hardpan behavior
• - - - - Track wear parameters
• - - - - Tire rubber accumulation
• - - - - Dirt displacement from tires
• - - - - The formation of track roughness and perturbation
• - - - - The progression of dynamic track data has been updated for all dirt tracks
• - - All Dirt Racing tires have been updated with some of the following improvements:
• - - - - New wear rates based on the hardness and wetness of the dirt racing surface
• - - - - Dirt displacement parameters
• - - - - The manner in which tires calculate their contact on undulating dirt surfaces has been improved.

AI Racing

• AI Drivers have completed an extensive training course for participating in the Heat Racing format!
• - - Heat Racing is now available for Hosted Sessions using AI Rosters!
• - - This is a brand new feature implementation for both AI Racing and the Heat Racing format.
• - - - - It is important to note that this feature is only available for Hosted Racing events at this time. AI Drivers still need the support of real humans in their Sessions or artificial chaos would surely ensue.
• AI Drivers are now fully trained and capable drivers for the following new vehicles:
• - - Aston Martin DBR9 GT1
• - - Cadillac CTS-V Racecar
• - - Cadillac V-Series.R GTP
• - - Chevrolet Corvette C6.R GT1
• - - Ford GT GT2
• - - Ligier JS P320
• - - Porsche 911 GT3 R (992)
• - - Radical SR10
• AI Drivers have memorized and are ready to race for the gold at the following new tracks and configurations:
• - - Autodromo Nazionale Monza - GP without first chicane, Junior, and GP without chicanes
• - - Chicago Street Course - 2023 Cup and Prototype
• - - Circuit of the Americas - East and West
• - - Irwindale Speedway - ALL 5 Configurations
• - - MotorLand Aragón - ALL 7 Configurations
• - - Nashville Fairgrounds Speedway - Mini
• - - New Smyrna Speedway
• - - Twin Ring Motegi - East and Oval
• - - Willow Springs International Raceway
• AI Drivers have graduated from yet another season of advanced education classes. Training for 2023 Season 3 included the following programs:
• - - Kinesthetics for Preventing Pace Lap Panic
• - - [PHY-220] Drafting Speed Predictions
• - - White-Knuckle Door-to-Door Racing: A Retrospective
• - - Fast Cars Beware: Slow Cars
• - - Slow Cars Beware: Fast Cars
• - - AI Program Upgrade IV: Reaction Timing (Class: Pistol Shrimp)
• - - Danny S.’s Pre-School Seminar: Left-Hand Makes the “L”!
• - - The Technical Know-How Overlaps for GTP & Rocket Ship Piloting
• - - SuperTravel SuperProgram 2023: SuperSpeedways
• - - Lessons from Slot Car Racing on Racing Lines
• - - Tire Compound Connoisseur Magazine (Spring ‘23 Issue)
• - - Brake Pad Dissection - a Science Lab Qualified Course
• AI Drivers have improved their driving skills with the following vehicles:
• - - NASCAR Cup Series Next Gen Cars
• - - NASCAR Trucks
• - - BMW M Hybrid V8
• - - Dallara P217
• AI Drivers have improved their driving skills at the following track configs:
• - - Atlanta Motor Speedway - Oval
• - - Bristol Motor Speedway - Dual Pit Roads & Single Pit Road
• - - Canadian Tire Motorsports Park
• - - Daytona International Speedway - Oval
• - - Detroit Grand Prix at Belle Isle
• - - iRacing Superspeedway
• - - Talladega Superspeedway
• AI Drivers and their cars are now immediately removed from the world at the end of a Session. For safety.
• Fixed a handful of AI System issues including:
• - - Fixed an issue where custom Paint Schemes were not appearing on AI Drivers in Replays.
• - - Fixed an issue where AI Drivers could lag up to several seconds after the green before hitting the gas for standing starts in Hosted Sessions.
• - - Fixed an issue where AI Drivers could incur gain-time penalties while they were being towed back to their pit box. We don’t know what they were doing to Race Control staff to earn them, but it should be fixed now.
• - - Fixed an issue where multiple “Pitting In” notifications could be received.
• - - Fixed an issue with the display of AI Driver names on the Entries tab for Replays.
• - - Fixed an issue where AI Drivers appeared to be using the incorrect dive plane for the Dallara P217.

New Damage Model

• The New Damage Model is now active on the following additional vehicles:
• - - Cadillac V-Series.R GTP
• - - Dirt Late Model (ALL)
• - - Ligier JS P320
• - - NASCAR Truck Chevrolet Silverado
• - - NASCAR Truck Ford F150
• - - NASCAR Truck Toyota Tundra TRD Pro
• - - Porsche 911 GT3 Cup (992)
• - - Porsche 911 GT3 R (992)
• - - Renault Clio R.S. V
• Some New Damage Model system code has been reorganized to make future development easier.

Auto Fuel

• Spotters and Team Members may now control their driver's Auto Fuel state.

Spotter

• The iRacing Spotter System has received some updates to help make it more accurate and dynamic. It is now better able to read Race Control events as they occur on the track, and a variety of new Spotter Calls have been added:
• - - Car in Front/Behind is Pitting
• - - Faster Car Approaching
• - - Gaining/Losing the car in front
• - - Leader Change
• - - Leader Lap Time
• - - Leader is Lapping You
• - - Session New Fastest Lap
• - - Your Personal Best Lap Time
• - - Time Remaining in Session 20/10/5 Minutes
• - - Settings for these new messages have been added to the “[SPCC]” section of the “app.ini” file.
• - - - - These messages will only play if “Chattiness” is set to MEDIUM or HIGH, and they are turned on in the “app.ini” file, which they are by default.
• A new “Silence” function has been added for the Spotter.
• - - In the Sound Options Menu, users can bind a key press that will interrupt and stop any current spotter message and temporarily disable future messages for a short duration. The duration of the hush may be adjusted via the “hushDuration” variable in the “app.ini” file, found in the “[SPCC]” section.
• “Leader Car” calls now returns the leader car in the same class as the player car. This means all spotter messages pertaining to the leader will now reference the leader in the same class as the player, instead of the outright leader.
• - - Messages include:
• - - - - Leader is pitting now
• - - - - Leader is at Start/Finish
• - - - - You're catching the leader
• - - - - One lap to win (if you are the leader car)
• Both Italian spotter packs have been updated and improved!
• - - Many thanks to Renzo A. Olivieri and Marco Arcidiacono!
• The Race Laps remaining spotter message logic has been updated.
• Fixed an issue with the fuel spotter calls when the pit entry location was dramatically different from the Start/Finish line location.

Graphics

• A new Graphics Option has been added: Hide Cockpit Obstructions.
• - - This option hides several visually obstructive elements from the world, including: Halo, A-Pillar, and Rock Screen.
• Vehicles that utilize the New Damage model have had their car model format adjusted to reduce video memory demands.
• Improved the accuracy of steering angles for viewing your opponents’ cars’ wheels.
• Adjust brake light exposure on some cars to try to prevent them from turning white when viewed from a distance.
• Updated the system which processes the hiding and displaying of halos for Replays.
• GGX blended dirt texture shaders have been improved.
• SpeedTree lighting has been updated.
• The graphics Option for SpeedTree self-shadowing has been removed.
• - - The visual benefits were minimal and the processing needs were demanding.
• Tooltips have been added for SSAO parameters.
• A new SDK for SpeedTree has been integrated.
• Fixed an issue where the reverse and unseen sides of some SpeedTree faces were being rendered, wasting processing time.
• Fixed an issue where distortion particles were not rendering properly unless they were inside the car.
• Fixed an issue where motion blur would trigger whenever the garage was visited.
• Fixed an issue where motion blur was appearing at different amounts on different parts of the same car.

3D Foliage System

• A new environmental graphics feature option has been added to the graphics options menu: Foliage!
• - - The new Foliage system procedurally generates 3D foliage of an appropriate biome type at specified tracks. Foliage may include grasses, shrubs, boulders, cacti, flowers, and other small environmental assets. 3D foliage has no impact on driving or physics, but should decorate the world much more realistically.
• - - In the Graphics Options menu, there are several levels of detail that may be selected for use by the 3D Foliage System which can customize your visual experience and your rendering performance. You may also select to disable the system entirely.
• - - With this release, only Willow Springs International Raceway has been seeded by the new 3D Foliage system so far, but Mother Nature always finds a way to spread!

Visual Effects

• Lighting for particle effects has been improved.
• The PopcornFX SDK has been updated to the latest version.

Audio

• Audio Hot Swap support has been added to iRacing!
• - - Forgot to plug in your headset before the race starts? iRacing now detects your device when it's plugged in, even during a race. If you've selected "System Default" from the sound options, audio automatically moves to the new device when the default changes. If you have selected a specific audio endpoint, it activates once it's available.
• - - Runtime audio device switching is now supported. When the default device is selected, a new default device can be chosen in Windows, and the Simulator will use the new device. If a specific device is selected, it will be used in the Simulator when it is activated in Windows.
• - - - - disableWindowsCoreAudio=0 When enabled (1), this option disables any Windows Core Audio integration (native windows audio).
• - - - - disableAudioDeviceChangedEvents=0 When enabled (1), this option disables dynamic audio device changing.
• - - Please note: Audio Hot Swapping is enabled by default.
• A new Audio Options setting has been added which allows you to assign a System Communication Default Device.
• A new audio option, “ambientMusicDisabled”, has been added to the “app.ini” file.
• - - 0 is the default value. Setting this parameter to 1 will disable all environment music that is normally played over the PA system while in the Simulation.
• Dynamic brake sounds have been rebalanced.
• Audio for load transmission on a variety of cars has been improved.
• The engine audio for all Pace Cars has been adjusted and optimized.

Environment

• New color and texture variations have been added for a variety of parked vehicles found around the tracks.

Interface

• Enhanced the right-click pop-up menus on the Session/Replay screen, and the Driving screen, to provide the option for private messaging (PM-ing) an individual user, the current driver of a car, or a car's entire Team (which includes a driver's spotters/crew in non-team sessions).
• - - Existing Admin/Race Control operations applied to a car that would have PM-ed someone on the team have been updated to message the whole team, instead of just one team member.
• - - Manually PM-ing a car number using "/#N", with N being the displayed car number, including leading zeros if shown, will now PM the whole team.
• - - To PM just the team member that's currently driving the car, use "/#N@" (add the @ symbol immediately after the car number). If the team's car is in its pit stall but the driver has gotten out of the car, that user is still PM-ed. If the team's car is not even in the world, no PM is sent when attempting to message its current driver, and you will be informed of this.
• - - - - To prevent receiving duplicate messages, if you would receive a chat message you sent because the target includes you (you're on the target team, you're the target team's driver, or you're talking to yourself!), you only receive the message due to being associated with the target of the message. That is, the message is not separately echoed directly back to you.
• - - You can continue to manually PM an individual using the existing mechanism of specifying their name after the "/".
• Text chat responses to Race Control Admin commands now identify the targeted entry with the team name and car number, instead of the name of the driver. In non-driver-swap events, the “team name” is the driver's name.
• An option for the units selection has been updated to “English (USA)” for clarity.

Camera

• A new highest option level, “Ultra”, has been added for Motion Blur.
• Fixed an issue with Driver View Pitch/Roll chassis effects so that when the view is locked to the horizon the car can now roll farther without the camera following the position of the car. This should help reduce motion sickness in VR if you use this feature.
• Fixed an issue for whenever a car’s center-of-mass left the camera frame, all motion blur on the car was lost.
• Fixed an issue where the focus of the camera was getting unwanted motion blur for cockpit cameras.
• Fixed an issue with motion blur on cars when using multiple displays.

Controls

• The automatic parking brake that holds a car still when you come to a stop will now fully apply itself anytime the car comes to a stop, rather than waiting for the user to hold the brake pedal down once stopped. This should help prevent cars from accidentally rolling away when you come to a quick stop but fail to fully engage the brake pedal.
• The Reset Button now prevents users from putting you into the car if your steering wheel needs assignment. Doing this now will take you to the Controls Wizard and allow you to assign and calibrate your driving controls.
• The test for XInput devices has been simplified.
• Fixed an issue that could cause some joysticks to fail to calibrate properly if the previous calibration was similar enough to the new calibration.
• Fixed an issue in the Options screen where the inputs (shifter, wheel, etc) would not respond if a button was held down on a wheel.

Force Feedback

• When calibrating a wheel, iRacing now checks that your selected maximum wheel angle and Force Feedback status match what we expect based on your detected hardware. A notification will appear if these do not match.
• - - This is an effort to detect common errors with certain wheels, either that do not have the correct drivers installed or that have a maximum wheel angle set to a very low value by default. If you receive this notification, or need help setting up your racing wheel, please reach out to Customer Support.
• iRacing will now try to automatically detect your racing wheel’s maximum force, and adjust the wheel force slider accordingly. This is used to help us safely and automatically calculate the force levels to send to your wheel. We can't always know how your wheel is set up, so this may be an overestimate of your maximum force level. This is the safer guess, but in some instances it may limit how strong of a force you can request from the simulation. In those cases you can turn off the “auto-mode” and manually set your wheel’s peak value, if known.
• Improved the force auto tune button so that it takes the wheels maximum force into account. This will lighten up the auto tune as the wheel force increases.
• - - There is a new scaling parameter in the “app.ini” file, “autoForceFactor”. This value defaults to 0.5, and allows you to adjust the aggressiveness of the reduction. Setting “[Force Feedback] autoForceFactor=1” will remove all reduction, giving you a 1:1 force output. Setting it to 0 will effectively always give you 6 Nm of peak force at the wheel. Any value in between will blend between these two extremes. The default value of 0.5 should be a good value for most users.
• A mappable button (Ctrl-A) has been added to apply the Auto Force adjustment found in the F9 Black Box.
• For the Auto Force Feedback peak force detection, data collected when the car is out of control will now be suppressed. Also, data collection will be paused for several seconds immediately after an incident. The goal is to make this system more stable and consistent, even if you wreck.
• For Force Feedback, a safety check has been added to detect if the wheel jumped in position (ie: we lost/gained communication with the wheel). If a communication interruption is detected, Force Feedback will be suppressed momentarily for safety.
• A new slew rate limiter filter that is controlled via the smoothing slider is now available in the Force Feedback options tab.
• - - This filter limits the rate of change of the force feedback signal so your wheel can't accelerate beyond a fixed value. In essence it smooths out the large jolts while leaving the rest of the signal alone. A value of 25% will have almost no impact on your regular driving, while softenting out curb or wall impacts, and a value of 75% will smooth out most rumble strips and make curb hits almost invisible. If you find that you have to turn down the FFB forces below the level you would like because the jolts from curbs or accidents are too large, then try turning this filter up instead. Try a value of 50% to start, and turn it down to 25% if you feel it is too much.
• - - - - You can go back to the old boxcar filter via the “[Force Feedback] smoothingFilterType=1” entry in the “app.ini” file.

Replays

• Chat messages and incident point accruement are now saved and viewable with Replays.
• Fixed an issue where custom Paint Schemes were not appearing on AI Drivers in Replays.

Telemetry

• Live brake line pressure (LFbrakeLinePress) has now been zeroed out and will no longer show a value.
• - - Disk based brake line pressure is still available (LFbrakeLinePress), and now has any ripple from the abs modulation included in its value.
• - - A new BrakeABSCutPct value has been added to the disk based telemetry that shows the percent of brake force reduction being applied by the ABS system.
• Driver suit, body, face, and helmet type ids have been added to the session string.

Official iRacing Sporting Code

• A variety of updates have been made to the Official iRacing Sporting Code, including:
• - - A new section 6.8.3. has been added which describes the correct behavior for Starting from Pits.
• - - Restructured the paragraphs describing Rolling Starts for improved clarity for both Oval and Road racing.
• - - Better explained how multiclass cars grid, and defined what starts a multiclass race.
• - - License Class images have been updated.
• - - Identified that Joker Laps may not be used for time-based competitions at Rallycross Tracks.
• - - A reminder has been added that it is unacceptable for suspended or restricted Members to use alternate accounts.
• - - Identified that nefarious tactics may also not be used during Races, and removed a poor example of nefarious behavior.
• Review the latest version of the Official iRacing Sporting Code here:
• - - https://www.iracing.com/iracing-official-sporting-code/