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www.ecodriver-project.eu
Co-financed by
Designing an in-vehicle eco-driving support system to assist drivers in conserving fuel
Daryl Hibberd, Hamish Jamson, Samantha Jamson, Natasha Merat Institute for Transport Studies Uni. Leeds HFES 2013
What is eco-driving?
2
MAINTENANCE
MODE AND VEHICLE CHOICE
GOLDEN RULES
Real-time, in-trip, feed-forward
3
Anticipate
traffic flow
Maintain a steady
speed at low RPM
Avoid excessive
braking Shift up early
Make use of engine
braking Check tyre pressures
Do not carry unnecessary loads
Fuel efficient acceleration and deceleration
Key questions
4
• Do drivers want eco-driving assistance?
• What in-trip assistance is best?
• What in-trip assistance do drivers
prefer?
Previous work
5
• Rapid prototyping study
• 6 visual/auditory
• 6 haptic
University of Leeds Driving Simulator
Eco-driving Scenarios Village Entry Village Centre Village Exit
Bend Entry Bend Navigation Bend Exit
S-Bend Entry S-Bend Navigation S-Bend Exit
Study Design
• In-vehicle feed-forward advice
• HMI modality study
–Visual via glass dashboard
–Haptic via 0-200N variable pedal
• Feedback and Advice Strategy (FAS):
guiding drivers to correct throttle angle
• Simple eco-driving algorithm
8
Visual display: Eco-foot
9
Haptic pedal: Normal
Haptic pedal: Stiffness system
Measures
ERROR
ACTUAL
REQUIRED
Root mean
squared pedal
error
Results に Pedal Error
14
Speed decrease scenarios
Pedal Error
15
Speed increase scenarios
Percent Road Centre
16
Speed decrease scenarios
SDLP
17
Speed decrease scenarios
Speed increase scenarios
Workload: NASA-TLX
18
S y s te m
NA
SA
-TL
X S
co
re
(m
ax
. 6
0)
B a s e lin e F o o t F o r c e S t if fn e s s
0
2 0
4 0
6 0
Acceptance: Van der Laan
19
Discussion
• Haptic force as a potentially useful in-trip
guidance modality
• Specific to speed decrease scenarios?
• Need for objective-subjective balance
• “ﾗﾉ┗W さMPG ﾗヴ LっヱヰヰKMSｷゲヮ┌デWゲざ
www.ecodriver-project.eu
Co-financed by
Designing an in-vehicle eco-driving support system to assist drivers in conserving fuel
Daryl Hibberd, Hamish Jamson, Samantha Jamson, Natasha Merat Institute for Transport Studies Uni. Leeds HFES 2013
