FAQ - Terms
FAQ
01. Is it ok if I don't have a track focused vehicle?

Absolutely, this is the main purpose of VPR. As long as your vehicle is well maintained and performs consistently, it should enable you to focus solely on your driving.

02. Does a better lap time give me more odds for a good Driving Score ?

It certainly does.

03. With what kind of vehicles will the VPR work?

At the moment in all cars and trucks. Check term 7.2 for some exceptions.

04. Any high Driving Score tips?

Use a certified instructor and in case you feel fading on your brakes, tyres, or engine power, cool down your car and stop your session. After any issues have been resolved try a new session where you will have more chances for a better Driving Score.

 

05. Any high Driving Score technical tips?

A solid, balanced and reliable vehicle can provide consistent performance and more odds for high Driving Scores. Also consider using a vehicle that suits your driving skills.

06. My lap time is worse than the previous session but my Driving Score is better. Why this happened?

This might happen for various reasons but most probably the overall grip level due to track conditions or tyre wear may be lower which results in a less capable vehicle. You were awarded a better Driving Score because you managed to use more of the currently available vehicle capabilities. 

07. My session was ranked as Invalid. Why has this happened?

This might happen if the VPR algorithm realises that the actual performance of the vehicle does not match the data collected during this session.

08. Can I compare Driving Scores from different race tracks?

In many cases yes but there are some occasions where the morphology of different routes vary significantly. Therefore, VPR’s recommendation is to compare and use as reference Driving Scores from the same track.

09. How can I download my driving data file?

After each driving session a .vbo data file is being generated. You can download this file by clicking the download button located next to the session number at your Personal Results page.

10. How can I use VPR?

Currently VPR is used in specific events. Ask the event organiser for availability or get in contact with us.

Terms
01. SAFETY

All “Vehicle Performance Rating” [VPR] users shall follow the Organiser’s rules and stay away from any kind of wheel to wheel competition among themselves. If it is clearly established that these rules have been broken, the user may be Disqualified [DSQ].

02. FAIR PLAY

Fair play is the no1 fundamental value of “Vehicle Performance Rating” [VPR].

2.1  Users shall proceed in compliance with all recognized principles of sportsmanship and fair play.

2.2  The fairness and accuracy of “Vehicle Performance Rating” [VPR] is related to the live data which Symmetry collects. Users should aim for the best performance that the driver/vehicle combination can achieve under the certain circumstances. If it is clearly established that these principles have been violated on purpose, the user may be Disqualified [DSQ] for a certain session, or even the entirety of the event.

03. DISCLAIMER

All those who use “Vehicle Performance Rating” [VPR] do so at their own risk and responsibility. Each user or, in the case of minors or persons who do not have full legal capacity and liability, the responsible adult agrees and acknowledges that:

3.1  They are aware of the inherent element of risk involved in the sport and accept responsibility for the exposure of themselves, others, other property and their own vehicle to such inherent risk whilst using VPR.

3.2  They are solely liable and responsible for the safety of themselves, their vehicle and their other properties.

3.3  They accept responsibility of any injury, damage and indirect damage.

3.4  Their vehicle is in good order, properly maintained and they are officially licenced, fit and healthy to drive the vehicle that has been fitted with a VPR device.

3.5  VPR bears no responsibility or liability for any injury, damage, indirect damage or loss to the extent that such occurred while using any aspect, characteristic, mechanism or item otherwise related with Vehicle Performance Rating and the equipment that Vehicle Performance Rating provides and/or is connected with.

3.6  They accept the VPR results.

3.7  They accept that VPR may update the sofware, or firmware, or hardware that VPR use.

04. VEHICLE APPLICATION

“Vehicle Performance Rating” [VPR] works on any kind of car or truck where the Symmetry device has been properly fitted.

05. RESULTS

5.1  “Personal results”

“Vehicle Performance Rating” [VPR] provides the following Personal results:

a) Lap. Lap number.

b) Driving Score [%]. This is the Driving Score of each lap. This value should be used as reference.

c) Lap time [m]. This is the logged time of the lap.

d) Min Apex Speed [km/h]. This is the minimum logged speed during the lap.

e) Max Speed [km/h]. This is the maximum logged speed during the lap.

f) Distance [metres]. This is the covered distance during the lap.

g) Acceleration [g]. This is the average of the best longitudinal accelerations, at the straight lines of the session.

h) Lateral [g]. This the maximum sustained lateral grip of the session.

i) Braking [g]. This is the maximum sustained deceleration of the session.

Note: The green background values are the best values from the results. At “Lap Time” and “Distance” the best value is the lowest one.

 

5.2  “Overall results”

“Vehicle Performance Rating” [VPR] provides the following Overall results:

a) Driving Score [%]. This is the best Driving Score of the user.  Τhe number on the ( ) gives the information on which lap the user achieved it. This value should be used as reference

b) Diff (gap) [sec]. This is an indication of your lap time’s difference and gap.

c) Laps. This is the number of the laps that the user made in total.

d) Best Lap [m]. This is the fastest logged lap of the session with the best Driving Score. Τhe number on the () gives the information on which lap the user achieved it.

e) Distance [metres]. This is the covered distance of the fastest lap, of the session with the best Driving Score.

f) Min Apex Speed [km/h]. This is the minimum logged speed of the fastest lap, of the session with the best Driving Score.

g) Max Speed [km/h]. This is the maximum logged speed of the fastest lap, of the session with the best Driving Score.

h) Acceleration [g]. This is the average of the best longitudinal accelerations, at the straight lines of the session with the best Driving Score.

i) Lateral [g]. This the maximum sustained lateral grip of the session with the best Driving Score.

j) Braking [g]. This is the maximum sustained deceleration of the session with the best Driving Score.

Note: The green background values are the best values from the results. At “Lap Time” and “Distance” the best value is the smallest one. ”

 

5.3  “VPR League”

“Vehicle Performance Rating” [VPR] provides the following VPR League results:

a) Date. This is the date of the best driving score the user achieved, of all time, at the specific track. 

b) Driving Score [%]. This is the best Driving Score, of the user, of all time, at the specific track. This value should be used as reference.

c) Diff (gap) [sec]. This is an indication of your lap time’s difference and gap.

d) Best Lap [m]. This is the fastest logged lap of the session with the best Driving Score, of the user, of all time, at the specific track.

e) Distance [metres]. This is the covered distance of the fastest lap, of the session with the best Driving Score, of the user, of all time, at the specific track.

f) Min Apex Speed [km/h]. This is the minimum logged speed of the fastest lap, of the session with the best Driving Score, of the user, of all time, at the specific track.

g) Max Speed [km/h]. This is the maximum logged speed of the fastest lap, of the session with the best Driving Score, of the user, of all time, at the specific track.

h) Acceleration [g]. This is the average of the best longitudinal accelerations at the straight lines, of the session with the best Driving Score, of the user, at the specific track, of all time.

i) Lateral [g]. This the maximum sustained lateral grip of the session with the best Driving Score, of the user, of all time, at the specific track.

j) Braking [g]. This is the maximum sustained deceleration of the session with the best Driving Score, of the user, of all time, at the specific track.

Note: The green background values are the best values from the results. At “Lap Time” and “Distance” the best value is the smallest one. “

 

06. DRIVING SCORE ABBREVIATIONS

6.1 ASTERISK. VPR realised that the actual performance of the vehicle may not match the data collected during this session. [*] at Driving Score number.

6.2 LOW ACC. Insufficient GNSS accuracy. Only lap timing is provided.

6.3 INVALID. Τhe VPR algorithm realised that the actual performance of the vehicle does not match the data collected during this session. Only lap timing is provided.

6.4 RET. Retired from driving session. Only lap timing is provided.

6.5 DSQ. Disqualified from driving session. No results are provided.

6.6 TRACK LIMIT. Track limits violation. No results are provided.

07. DRIVING SCORE EXCEPTIONS

 “Vehicle Performance Rating” [VPR] is designed to provide a unique combination of data at a high level of accuracy. However the accuracy of Driving Score and Diff (Gap) may be compromised at some extent in the cases listed below:

7.1  Significantly different traction level on specific part of the track. Reasons might include a very bumpy section, a part of the course where there has been a liquid spill, a very wet spot while the rest of the route is dry, etc. [possibility for strict Driving Score].

7.2  Vehicles that due to their downforce, can produce significantly different lateral grip levels among turns of the specific track.

7.3  Insufficient GNSS accuracy. Most common reason for this is poor device installation but rarely it may also occur due to technical issues with the GNSS system.

7.4  Users with zero to minimum training in high performance driving. [possibility for higher Driving Score].

08. PROCEDURE

8.1  The “Symmetry” device must be installed properly and all LEDs must be in normal operating state (no red lights flashing).

8.2  The driving session starts when the vehicle exceeds 10km/h and ends when the vehicle’s speed is less than 10km/h  for more than 10seconds.

09. SOFTWARE VERSIONS

9.1 Current version: 1.3

Active Duration: 5/2/2020, 00:01am UTC time-now

Updates: Accuracy at Diff [gap]

9.2 Software update applies in every further VPR action and updates the “VPR League”

9.3 Older versions

Version: 1.2 [First public version]

Active duration: 25/11/2019 – 4/2/2020