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Your logo here O LDER D IVERS ’ NEEDS AND EXPECTATIONS CONCERNING CAR DRIVING A SSISTANCES : A F OCUS G ROUP STUDY AMONG F RENCH DRIVERS Authors: T. BELLET,

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Presentation on theme: "Your logo here O LDER D IVERS ’ NEEDS AND EXPECTATIONS CONCERNING CAR DRIVING A SSISTANCES : A F OCUS G ROUP STUDY AMONG F RENCH DRIVERS Authors: T. BELLET,"— Presentation transcript:

1 Your logo here O LDER D IVERS ’ NEEDS AND EXPECTATIONS CONCERNING CAR DRIVING A SSISTANCES : A F OCUS G ROUP STUDY AMONG F RENCH DRIVERS Authors: T. BELLET, J.C. PARIS, C. MARIN-LAMELLET (IFSTTAR – LESCOT) Vienna, the 5th of June 2014

2 To increase knowledge about French Older Drivers’ Difficulties when driving their own car To Identify Older drivers’ Uses, Expectations and Acceptance of Driving Aids (Existing or Futures) To Investigate potential Differences between Women and Men In order to Identify and/or Specify future Driving Aids specifically adapted to Older Drivers : =>S-ADAS : Senior Adapted Driving Aid Systems R ESEARCH O BJECTIVES 2

3 Focus Groups: involving around 5 participants (+/- 2) Total Duration : 3 hours (+ 2 coffee breaks) Individual Opinions were firstly collected by using Likert scales (from 0 % to 100%) :  A kind of “Collective Questionnaire” (individual Grid)  Avoid inter-individual influences in the group Collective discussions / debates (on overall issues), but supported by Individual opinions initially collected  Similar versus Contrasted points of view 3 M ETHOD FOR DATA COLLECTION

4 D ATA COLLECTION : L IKERT S CALES ( FROM 0% TO 100%) Question) Have you any difficulties to [example] when driving ? AbsolutelyNot at All 0 %50 %100 % Rather « NO »Rather « YES » NEVERALWAYS 0 %50 %100 % SometimesFrequently Question) Could be [example of driving aid] interesting for you ? Difficulties when driving: Driving Assistance Interest / Utility: 4

5 M ETHOD : E XAMPLE OF I NDIVIDUAL G RID 5

6 M ETHOD : I NVESTIGATED T OPICS (125 ITEMS ) Sub-components of the driving task (90 items) Navigation : route planning and trip following (16 items) Speed control and speed limits respect (42 items) Intersection crossing (16 items) Highway Insertion and Lane Change manoeuvres (16 items)  For each of these topics :  Difficulties: they met when they drive their own car  Aid Needs: Uses (if existing) or Wishes (regarding future driving aids) Interactions with other Road Users (20 items) Problems when interacting with specific sub-groups of other RU (6 main groups: Motorcycles, Bicycles, other Cars, Trucks, Bus, Pedestrians) Aggressive behaviours from others and their Context of Occurrence Vehicle Automation : Utility and Acceptance (15 items) 6

7 P ARTICIPANTS Number: 30 Older drivers Gender: 15 Women and 15 Men Age: from 70 to 85 years old (Mean of 75 yo) Coming from a Representative Sample of 76 Older drivers of the Rhône area All of them have previously participated to a driving experiment on open road (IFSTTAR Car) 6 Focus Group Sessions were organized (in mean: 5 participants / session) 7

8 8 P RELIMINARY R ESULTS FOR SOME DRIVING SUB - TASKS  D IFFICULTIES, E RRORS AND N EEDS  D RIVING A ID U SES OR E XPECTATIONS  W OMEN VERSUS M EN D IFFERENCES ( IF STATISTICALLY SIGNIFICANT, T - STUDENT TEST ; P <0.05)

9 Difficulties to perform the Navigation Task (without aid) : Easy for Familiar Trip (5%), more difficult for Unfamiliar Route (34%) Some difficulties to Find (34%) and then Read (33%) road signs Adaptive strategies: large part of them prepare their trip if they have to use an unfamiliar Route (From Maps or via-Michelin/Mappy) Driving Aid Uses and Expectations : 69% of the participants have a Driving Aid for Navigation They frequently use it (41%), also for familiar trip They are highly interested by Future Navigation Systems based-on Head-Up Display (72%) or Augmented Reality (75%) Women versus Men differences: Significant differences for “trust in Nav. Aids” and “Self-Confidence” NAVIGATION : D IFFICULTIES AND A IDS U SES /E XPECTATIONS 9

10 10 W OMEN -M EN COMPARISON FOR N AVIGATION : “T RUST IN DRIVING A IDS ” & “S ELF -C ONFIDENCE ” Trust in Navigation AidsSelf-Confidence for Nav. MENWOMEN (significant lowest values)

11 11 S PEED C ONTROL AND R EGULATION: D IFFICULTIES AND E XPECTATIONS

12 12 S PEED C ONTROL : D IFFICULTIES ( WITHOUT USING ANY D RIVING A ID ) To Know the current speed limit To monitor their Car Velocity InvoluntaryDeliberate Attitude Would like to Respect Speed Limits Main Difficulties Speed Violations (If occurring) => Highly concerned while driving (76%)

13 13 S PEED C ONTROL : D IFFICULTIES / C ONTEXT ( WITHOUT USING ANY D RIVING A ID ) Urban 50 Km/H Urban 30 Km/H Rural 90 km/h Urban Highway 90 Km/H Rural Change Highway Change Highway 130 Km/H

14 14 S PEED C ONTROL A IDS : U TILITY A SSESSMENT Warning System Speed Limiter Cruise Control Adaptive Cruise Control Information System Active Systems (ADAS) Information Systems (IVIS)

15 => Not any significant Difference S PEED R EGULATION : W OMEN VERSUS M EN C OMPARISONS 15

16 16 I NTERSECTION C ROSSING : D IFFICULTIES AND E XPECTATIONS

17 17 When having priority When don’t have priority To identify Priority Rules To implement Manoeuvres I NTERSECTIONS : D IFFICULTIES TO CROSS

18 18 I NTERSECTIONS D IFFICULTIES : T URN L EFT AT C ROSSROADS To Perceive Other Vehicles To Assess Others’ Speed To Assess Others’ Distance

19 19 D IFFICULTIES TO CROSS I NTERSECTIONS : M EN -W OMEN D IFFERENCES Left Turn at Crossroads All types of Intersections MENWOMEN (Significant Highest Values)

20 - Distance - Vitesse Croisement dans 10 sec BIP PERCEPTION Support GAP ASSESSMENT Support RISK DETECTION Support D RIVING A IDS AT I NTERSECTIONS : “L EFT T URN ” S UPPORT S YSTEMS 20

21 21 I NTERSECTIONS A IDS : P ERCEIVED UTILITY Perception Support Gap Assessment Support Risk Detection Support

22 22 MEN–WOMEN C OMPARISONS : A ID TO TURN LEFT AT C ROSSROADS Perception Support Gap Assessment Support Risk Detection Support But not any significant difference MENWOMEN

23 23 I NTERACTIONS WITH O THER R OAD U SERS

24 I NTERACTIONS WITH O THER R OAD U SERS : D IFFICULTIES 24 MotorcyclesBicyclesPedestriansTrucksBusesOther Cars REF. Value

25 I NTERACTIONS WITH O THER R OAD U SERS : W OMEN -M EN DIFFERENCES 25 MEN WOMEN (Significant Highest Values) MotorcyclesBicyclesPedestriansTrucksBusOther Cars

26 26 V EHICLE AUTOMATION : A CCEPTANCE AND P ERCEIVED U TILITY A SSESSMENT

27 V EHICLE A UTOMATION : A CCEPTANCE AND P ERCEIVED U TILITY 27 Vehicle Automation Principle Automatic Gear Box (Utility) Automatic Parking (Utility) Automatic Lane Keeping (U) Fully Automated Car (Utility) Overall Acceptance

28 Navigation : Difficulties: Highest when Olders have to drive on Unfamiliar Routes Aid : High equipment rate, Frequent Use of GPS, Highly interested by advanced Interfaces (HUD and Augmented Reality) W/M: Lowest values given by Women for Trust GPS & Self-Confidence Speed Control: Attitude : Older drivers Would like to respect speed limits, and it is one of their main concern when driving Difficulties to respect speed limits in Urban area (30 km/h zones), to be sure of the current speed limit in road sections with freq. changes Aid: Frequent Use by 1/3 of them and/or high Interest for driving aids Intersection: Difficulties: to identify priority rules & turn left at a Crossroads Aid: Utility of driving aids is well perceived (more particularly for Turn Left) W/M: Significantly assessed as more difficult by Women (= LC & Insertion) Vehicle Automation: Good Acceptance of the principle, even if IVIS seems prefered Perceived as a way to Increase Safety and to Preserve their Mobility CONCLUSION 28

29 T HANK YOU FOR YOUR ATTENTION


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