Tag Archive: warn the driver


Navigation Based ADAS : use SafetyNex to build adaptive cruise control and anticipation (predictive) brake systems

Nexyad SafetyNex

Imagine a robotized car that would slow down automatically when approaching a tiny curve, or an intersection or a priority, of a stop sign, etc … if needed (i.e. if and only if the current speed and acceleration of the car is not appropriate to the driving context). Sounds interesting ?
It would be then “smooth anticipation braking” (from 0.1 to 0.3 g) instead of “emergency braking” (so easier to do and not that disturbing for driver and passengers comfort in the car). Doing this, the car dramatically decreases the probability to be kept in a dangerous situation and it let much more margin to emergency brake if still needed.
Finally, it would mean that the car follows road traffic code plus safety rules (anticipation).
This is easy to achieve using NEXYAD real time driving risk assessment module SafetyNex : SafetyNex reads “Electronic Horizon” (reading POIs and decoding shape and dimensions of the infrastructure ahead), “GPS“, “accelerometers“, and can accept additional inputs such as “time to collision“, “size of free space“, “position in the lane“, “atmospheric visibility“, alert data streams (weather, accident, traffic, …). All those heterogenous data are used (data fusion) to estimate driving risk in real time : Driving Risk (t)
Then everytime that Driving Risk(t) comes higher than an acceptable threshold value, the robotized car slightly slows down … and that’s it !
SafetyNex is the result of 15 years of collaborative research and it works.
Markets : Car insurance and fleet managers (for real time alert and risk profiles recording), ADAS (for automatic predictive/anticipation brake), and Driverless car (Automated car that follows Road Traffic Code).
SafetyNex is Under deployment, please feel free to try it and put it into your own products (available as an API).
Keywords : Adaptive Cruise Control, ACC, Intelligent ACC, Intelligent Cruise Control, navigation-based, navigation-based ADAS, NB ADAS, ADAS, Advances Driver Assistance Systems, Anticipation brake, Predictive Brake, SafetyNex, Risk, Driving Risk, Real time driving risk assessment, road traffic code, SafetyNex, electronic horizon, GPS, accelerometers, time to collision, free space, size of free space, position in the lane, lane departure, visibility, atmospheric visibility, data stream, weather, accident, traffic, data fusion,…


Interpretation of Risk Profiles with SafetyNex
A new paper by Nexyad



Lire la version Française

NEXYAD has been developing the smartphonte application SafetyNex which estimates the risk of driving in real time [1]. SafetyNex is both a driver assistance system (ADAS), which alerts the driver (vocal alert) before danger (When the risk increases too much), and a telematics system that records risk profiles and usage profiles.
Warning before the danger gives the driver time to slow down and avoid the accident. Road Safety studies show that SafetyNex can reduce the number of accidents by 20% [2]. This simple functionality is of interest of car insurers, fleet managers, and to car manufacturers.
SafetyNex also rewards the driver with cups (gold, silver, bronze) that can be transformed into money incentive (vouchers, etc.) so that the safe drivers stil have a daily interest to go on using SafetyNex. Indeed, tools that are not used over a period of time rarely have a real effect on the accidentology. SafetyNex is therefore distinguished from other products, on the one hand by its real time and driving assistance, but also for its “reward” side. SafetyNex informs the driver In real time when the risk exceeds a threshold of danger, than one can say that SafetyNex gives the risk in the hands of the driver first. The driver is in control of his/her risk.
Then SafetyNex distinguishes from all telematics products that ultimately provide information to the insurer or fleet manager, but not to the driver who feels rightly spied on.
Risk and usage profiles [3] are forwarded to managers who have an interest in minimizing risk and the number of accidents. This paper presents a simple way to interpret the risk profiles constructed by SafetyNex.

SafetyNex estimates risk of driving at every instant.
Since SafetyNex also measures usages, it measures among other things the durations and the number of traveled kilometers.
One can then construct the curve Risk (t) which is the risk at each moment, and also the curve Risk (km) which is the risk at each point of the route.

Risk Distance

Risk Distance rated

Let’s consider one or the other of those curves, it is easy then to cut the risk into slots:

Risk 03

It is therefore possible to calculate the total duration spent [resp the total number of km carried out] with a risk
between 10% and 20%, for example (or between 50% and 60%). The graph of these durations [resp number of km] for each range of risk (0% -10%, 10% -20%, etc.), looks like :

Graph 4

It can be seen that this graph can be seperated into three parts:

Graph 05

. A very high bar of near zero risk
. A shape of « bell curve » comparable to a gaussian
. Rising at the very end towards high risks
NEXYAD has run over 3,500 testers since June 2016, and has been able to interpret the shapes of these curves.

The large quasi-zero risk bar simply expresses the fact that overall the car is a safe mode of transportation.
The part that draws a bell curve has a more or less strong spread : we have noticed that experienced drivers have a narrow curve (repeatability of their driving style is high) while beginners have a huge spread (they can’t drive always the same way).
The centering of the bell curve (maximum likelihood) corresponds to the way in which the driver takes a controlled Risk : cautious beginners have a low maximum likelihood (they try to take as less risk as they can) while experienced drivers have a higher maximum likelihood : they know what risk level thay can cope with.
Finally, the values that go up to the right (tail of distribution of the curve in bell) correspond to the vocal alerts, that is to saycases where the driver has not fully understood that the risk is high. In other words, it is the lack of anticipation and misunderstanding of road.

SafetyNex’s risk profiles make it possible to understand the kind of driver you have :
. Cautious / not cautious (maximum likelihood of the bell curve position)
. Experienced / beginner (spreading of the bell curve)
. Lack of anticipation / very good anticipation (queues of distribution of the curve in bell)
Fleet insurers and managers therefore have all the information that they need to help the driver.
For example, within the framework of prevention plans, offering training adapted to each type of risky driving.
We validated this information by driving 3,500 testers, including beginners, experienced drivers, and also pilots (who in take risks appearance, but in reality have a very safe driving). This allowed us to give these interpretations of SafetyNex’s risk profiles.
With the deployment of SafetyNex to reduce the number of accidents, professionals structurally gain margin, and can use this margin to analyze profiles, segment them, and find the segments where it may be interesting to develop UBI (Usage Based Insurance) and real time pricing fleet.
This multi-functionality of SafetyNex makes it a unique and effective tool for managing driving risks.





SafetyNex Video Demo Onboard

Voir la version française de la démo

SafetyNex is a Smartphone APP that measures Risk taken by the Driver in Real Time and warns him before dangerous areas.

SafetyNex is available throuth an API (Android, iOS, Windows, Linux)


le JDN : Mov’eo accélère les cracks français de la mobilité intelligente

Aujourd’hui le JDN ou Journal Du Net publie l’information que nous vous proposions il y a quelques jours en avant première : Mov’eo consacre Nexyad PME Championne.

Le pôle de compétitivité dédié à l’automobile lance le programme “PME championne” pour accompagner la croissance des entreprises les plus prometteuses du secteur.

Adaccess et Nexyad sont les deux premières PME à avoir été choisies. La première, créée en 2013, a séduit Mov’eo avec eVa, une plateforme de mutualisation des données anonymisées générées par les véhicules connectés à destination de l’industrie automobile. “Les essais par roulage coûtent très cher donc cette solution de mutualisation permet à tous les acteurs internationaux de la R&D automobile d’accéder aux data que leurs partenaires et concurrents veulent partager.”
La start-up yvelinoise Nexyad a aussi tapé dans l’œil du pôle grâce à SafetyNex, une application mobile qui estime en temps réel le risque de conduite. Elle alerte vocalement le conducteur avant un danger pour qu’il puisse ralentir, avec la promesse d’une réduction de 20% du nombre d’accident, et enregistre les profils d’usages et de risque des utilisateurs. Lauréate du BMW Tech Date en 2016, Nexyad s’adresse aux constructeurs et aux équipementiers qui veulent fournir une navigation intelligente en première et/ou en seconde monte ainsi qu’aux assureurs automobiles qui souhaitent proposer des contrats personnalisés. “Des négociations avancées sont déjà en cours avec des assureurs et la sortie officielle est proche”, assure Thierry Bapin.

Lire l’article sur le JDN

voir aussi :Mov'eo consacre Nexyad PME Championne


SafetyNex App Risk Profiles Analysis

Risk profiles estimated by SafetyNex: Analysis of profiles, and possible use to detect fatigue and hypovigilance of driver.

SafetyNex is a nomadic real-time risk estimation system. The system has been described in detail in previous publications [1] and uses the key concept of “near-accident” or “quasi-accident”, and is a result of 15 years of collaborative research with road safety experts and researchers.
The main competitive advantage of SafetyNex is that it allows, since the risk is estimated in real time,
to warn the driver (vocal alert), and thus to allow driver to avoid accident. Studies show that SafetyNex can reduce accident rate by 20% [2], which represents for insurers and fleet managers a consequent increase in margin [3].
But of course, SafetyNex also records usage and risk profiles. These profiles provide the behavior of the driver, or more precisely, his/her ability to regulate driving task consistently with danger. No need to record large volumes of data (accelerations, etc…) which in reality are not data (these are signals) for a possible back-office analysis, SafetyNex provides exactly the interesting data [4].
Below are examples of usage profiles and driver risk profiles.

. Read the entire paper
. Analyse des profils de risque en conduite estimés par SafetyNex (version française)


Nexyad invited to the 4th “Les rencontres du Fleet Management”

Last thursday 26th of january 2017, Gérard Yahiaoui CEO of Nexyad participated to a panel debate in Paris near Les Champs Elysées. He was invited as road safety telematics expert. Marie-Amélie Fenoll journalist at Decision Achats animated the discussion between other speakers : Jean-Yves Marie Rose of Ademe, Julien Honnart of Wayzup, Didier Blocus of ALD Automotive France, Edwin Colella and Alain Sinquin of Octo Telematics.

Fleet Management faces numerous problems and stakes in terms of safety, monitoring of drivers, training and loss costs. Gérard Yahiaoui presented SafetyNex App risk assessment in real time, that warns the driver before danger and gives individual and global risk profiles and usage profiles. An API of SafetyNex will be available very soon to integrate in any device. SafetyNex use allows to reduce accident rate by 20%.

Les rencontres du Fleet Management partners are ALD Automotive France, Ayming, Codes Rousseau, La carte carburant pro E. Leclerc, Octo Telematics and Phoenix development.

Gérard Yahiaoui Nexyadfrom the left Marie-Amélie Fenoll, Edwin Collela and Gérard Yahiaoui


Presentation of Driving Risk Assessment Smartphone App SafetyNex
at Moveo ADAS Morning

Cluster “Groupement ADAS” Launched the october 18th first ADAS Morning co-organized with MOVEO in Paris.
Thema was ADAS and Road Safety : to discuss challenges, solutions and opportunities with many specialists personalities in the field in front of a large audiance.

You’ll find videos of presentations HERE

NEXYAD presented SafetyNex Driving Risk Assessment Smartphone App

Gérard Yahiaoui at ADAS Morning
Gérard Yahiaoui presenting SafetyNex at ADAS Morning in Paris


New Release of SafetyNex

General ergonomics of SafetyNex has changed and after each run you have immediate results of your driving score with Gold Cup if you are safe.

SafetyNex Screenshots
SafetyNex comprehensive HMI



“SafetyNex the Revolutionary App of Road Safety”
Automotive & Transportation Newsletter #12 is Available

NEXYAD Automotive & Transportation Newsletter #12, October 6th, 2016

SafetyNex the Revolutionary App of Road Safety

Headlines :

– Nexyad on BMW booth at the Mondial de L’Automobile
– The SafetyNex Revolution for everyone
– Papers about SafetyNex
– Visit of BMW Startup Garage
– Important Release of ObstaNex : our Obstacles Detector for ADAS
– French Minister Ségolène Royal congrats SME’s
– Nexyad researcher speaker at Brussels
– Nexyad in Media

Read the Newsletter #12



SafetyNex the Revolutionary App of Road Safety

NEXYAD Automotive & Transportation Newsletter #12, October 6th, 2016

Headlines :

– Nexyad on BMW booth at the Mondial de L’Automobile

– The SafetyNex Revolution for everyone

– Papers about SafetyNex

– Visit of BMW Startup Garage

– Important Release of ObstaNex : our Obstacles Detector for ADAS

– French Minister Ségolène Royal congrats SME’s

– Nexyad researcher speaker at Brussels

– Nexyad in Media

Nexyad on BMW booth at the Mondial de L’Automobile

NEXYAD was invited by BMW on BMW booth at Mondial de l’Automobile Paris 2016, october 5th, .
After have been choosen as one of the three winners of BMW Techdate Challenge 2016.
BMW booth
Up left: presentation of SafetyNex by Nexyad; up right: Serge Naudin, CEO BMW Group France, Gérard Yahiaoui, CEO Nexyad. Down left: the fabulous BMW i8

Thanks to BMW for this amazing event
BMW gave the opportunity for three innovative french startups to present their technologies on the business lounge on BMW booth. Serge Naudin, CEO of BMW Group France made a speech that remains the goal of the challenge BMW techdate that bring the winners to BMW Startup Garage in Munich (two weeks ago). He congratulated Nexyad, Oridao and Sentryo and introduced each of them to a bench of selected journalists.
Gérard Yahiaoui presented SafetyNex (that reduces accident rate by 20%) Nexyad onboard App of Risk assessment for driver, then he answered the questions and received several invited customers and partners.

Reminder : BMW Techdate wished to push ahead the french innovative high tech and identify new partners for technology matters. After a picky skimming, 20 startups were selected to present their project in front of a professional panel of Automotive, mobility, and connected car experts.
The quality of SafetyNex impressed the jury and the 9th june, BMW France announced Nexyad as part of the 3 winners of the first Techdate Challenge with Oridao and Sentryo.

Read more

Interview of Nexyad CEO, Gérard Yahiaoui, by Laurent Meillaud at Mondial de l’Auto TV

The SafetyNex Revolution for everyone

SafetyNex, une App SmartPhone qui révolutionne le monde de l’automobile : véhicules intelligents, assurance auto, gestion de flottes, utilisation du digital pour le retail

SafetyNex is a Samartphone App developed and sold by NEXYAD, it’s allows to reduce Accident Rate by 20% [1]. This App has a straight applied interest for several users.

– Driver
– Insurance Company
– Car Manufacturer
– Fleet Manager
– Big Retailer

Read Full Paper

Papers about SafetyNex

SafetyNex is the ultimate SmartPhone App for real time onboard driving risk assessment.
See how it works and how SafetyNex can reduce accident rate by 20% with respect for driver’s privacy.
Just read all the papers (available both in English and En Français) and feel free to contact NEXYAD for any question : sales@nexyad.net
Note : NEXYAD will present SafetyNex on the BMW booth at MONDIAL de L’AUTO, in Paris, the 5th of October (*)
SafetyNex Card 1SafetyNex Card 2
(*) SafetyNex was selected by BMW during the BMW Tech Date Challenge in Paris in June 2016.

En Français :

. SafetyNex réduit de 20% le nombre d’accidents de la route

. Modification profonde du métier de l’assurance auto : apport de SafetyNex

. Estimation du risque d’accident par télématique embarquée dans le véhicule, et respect des libertés individuelles grâce à SafetyNex

. Présentation de SafetyNex : LA solution d’estimation temps réel embarquée du risque de conduite

In English :

. SafetyNex reduces road accident rate by 20%

. Deep changes in the business of Car Insurance : SafetyNex can help

. Car telematics for onboard real time driving risk assessment, and respect for privacy using SafetyNex

. SafetyNex presentation : the ultimate solution for real time onboard driving risk assessment

Visit of BMW Startup Garage

NEXYAD was received by BMW in Munich last week.
From an initiative of BMW France, we were invited in the heart of BMW with two other Laureats of BMW Tech_date : ORIDAO and SENTRYO.

BMW headquarter Munich

The BMW Startup Garage is a special department of BMW that seek for innovative SME’s to work with.
The program was pretty complete with presentation of SME’s and their products to an audience of chosen BMW teams, visits of BMW Welt (show room), BMW Museum, and BMW plant.
We were very impressed by the welcome of everybody, specialy from Startup Garage !
We want to thank again Carolina, Gregor and Matthias.

Next meeting october 5th on BMW Booth at Mondial de l’Automobile Paris 2016.

BMW Startup GarageBMW Techdate Winner Teams
BMW Techdate Winner Teams, Nexyad, Oridao and Sentryo

Important Release of ObstaNex :
our Obstacles Detector for ADAS

New Release of Nexyad ObstaNex v3.0

This new version included pattern recognition and tracking, and new management of camera model of with a special component that allows multiple camera models on a same RT-Maps diagram.
Applications are ADAS (Advanced Driver Assistance Systems) and Driverless Car, but also Road Safety.

ObstaNex v3.0 : Obstacles Detection for ADAS (here filter on vehicles detection)

French Minister Ségolène Royal congrats SME’s

September 28th, in Paris, Madame Ségolène Royal, french Minister for Ecology, Sustainable Development and Energy gave “Initiative SME’s” Prices from ADEME (French Environment & Energy Management Agency).

Voir la liste ici

Nexyad concourrait dans le cadre du projet SEMACOR (portage de SafetyNex sur les smartphones).

Merci à l’ADEME.
Ademe IPME 01
the laureates of “Innovative SME’s”

Ademe 02
French Minister Ségolène Royal, Gérard Yahiaoui, Nexyad CEO


Nexyad researcher speaker in Brussels

Smart Systems for the Automobile of the Future Brussels, 22-23 September 2016

Nexyad researcher Grégoire Julien, Dr Physics at Ecole Normale, presented a scientific publication at 20th International Forum on Advanced Microsystems for Automotive Applications (AMAA 2016).

Grégoire Julien, Pierre Da Silva Dias, Gérard Yahiaoui

Read the Paper

One can also find the paper in “Advanced Microsystems for Automotive Applications 2016” published by Springer 2016


Nexyad in Media


Ces trois start-up françaises qui ont séduit le groupe BMW
Trois start-up françaises, sélectionnées parmi 80 dossiers de candidatures, se sont vu ouvrir les portes du groupe BMW à Munich.

Lire la suite


BMW Connected : une mise à jour importante pour le Mondial de l’Auto 2016
Des start-up françaises pour aller plus loin

Lire la suite


Trois start-ups françaises ont séduit le groupe BMW

Lire la suite

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