1. IntelliDriveSM Update
AASHTO SCOHTS Annual Meeting
May 1, 2009

2. IntelliDrive is Connectivity
DOT’s IntelliDrive research program is focused on developing the information and communications systems technology backbone for a dramatically safer and more efficient future surface transportation system.

3. IntelliDrive Active Safety Applications
Vehicle-to-Vehicle (V2V)
Vehicle-to-Infrastructure (V2I)

4. IntelliDrive Active Safety Applications Issue Driver Alerts and Warnings
IntelliDrive safety applications are designed to increase drivers’ situational awareness and prevent crashes through Alerts and Warnings.
Warnings Vs Alerts
The main difference for drivers is the time horizon.
Alerts have a longer time horizon, and improve safety by increasing situational awareness.
Warnings inform the driver that immediate action is necessary.
Even last-second warnings can give drivers enough time to respond—e.g., to brake or steer around to avoid a crash.

5. DSRC: Communications Technology for IntelliDrive Active Safety Applications
Active Safety requires instantaneous (extremely low-latency) communications technology.
Dedicated Short Range Communications (DSRC) is the only currently available technology that meets requirements of active safety applications.
DSRC is similar to WiFi, tailored to the environment of moving vehicles
When DSRC is combined with GPS, the result is a low-cost communication system that provides 360 degree situational awareness of all similarly equipped vehicles and infrastructure within range.

6. V2V – 6 Prototype Safety Applications
Emergency Brake Light Warning
Forward Collision Warning
Intersection Movement Assist
Blind Spot and Lane Change Warning
Do Not Pass Warning
Control Loss Warning

7. Emergency Brake Light Warning
Emergency brake light warning provides notification to the driver when a vehicle ahead of us is braking., provided that both vehicles are equipped with IntelliDrive.
Definition: Issues warning to the driver of the host vehicle of an emergency or hard braking event by a vehicle ahead in traffic, even when driver’s line of sight is obstructed by other vehicles or bad weather conditions (e.g., fog, heavy rain)
Safety Problem to be Addressed: EEBL is aimed at avoiding or mitigating rear-end crashes, especially multi-vehicle crashes in dense traffic

8. Forward Collision Warning
Definition: FCW issues warning to the driver of the host vehicle in case of an impending rear-end collision with a vehicle ahead in traffic in the same lane and direction of travel
Safety Problem to be Addressed: FCW will help drivers in avoiding or mitigating rear-end vehicle collisions

9. Intersection Movement Assist
Definition: IMA issues warning to the driver of a stopped or slow moving vehicle that is about to enter an intersection, when it is not safe to enter because of high collision probability with cross traffic
Safety Problem to be Addressed: IMA targets a subset of intersection crashes related to proceeding through stop sign and uncontrolled intersections

10. Additional V2V Safety Applications
Do Not Pass Warning – System issues a warning to the driver who intends to pass slower moving vehicles ahead by moving into the passing zone of the adjacent lane, which is or will be occupied by another vehicle traveling in the opposite direction
Blind Spot and Lane Change Warning – System issues various stages of warning to the driver of the host vehicle during a lane change attempt if the vehicle’s blind spot is, or will soon be, occupied by another vehicle traveling in the same direction
Control Loss Warning – System issues a warning to the driver who is about to enter a zone where another driver has recently lost control of his vehicle.

11. V2I – 4 Prototype Safety Applications
Stop Sign and Signal Violation Warning
Stop Sign Assist
Signalized Left Turn Assist
Traffic Signal Adaptation 11

12. V2I –Safety Applications Traffic Signal Violation Warning
Left Turn Warning

13. V2I –Safety Applications Stop Sign Assist13

14. V2I –Safety Applications Left Turn Warning

15. V2I –Safety Applications Traffic Signal Adaptation
Stop Sign Violation Warning

16. Human-Machine Interface is Critical
IntelliDrive safety applications will be designed to decrease human error, which causes 81% of crashes.
The current IntelliDrive research program is emphasizing the importance of developing effective Human Machine Interfaces (HMIs), which are critical to ensure:
Effective crash prevention and mitigation
No unintended consequences
Increased driver workload
Risk compensation
Consumer acceptance

17. 25 % 23 % 9 % 28 % IntelliDrive Active Safety Applications
Can Prevent Most Crash Types
Intersection Movement Assist
Stop Sign & Signal Violation Warnings
CRASHES of All Severities--2007
25 %
Others
Crossing Paths
Lane Departure Warning
Lane Keeping
Curve Speed Warning
Stability Control
23 %
9 %
Blind Spot Detection
Side Radar
Off Roadway
Lane Change
28 %
Rear-End
Forward Crash Warning
Adaptive Cruise Control
Brake Assist
Automatic Braking

18. IntelliDrive Safety Applications
V-V
Forward Collisions
Intersection
Lane Change/ Merge
V-I
Intersection
Curve speed warning
Driver Information
Hazard Alert
Weather
Navigation
Requires DSRC
Communication Options
25%
89%
100
15%
Percent of All Crashes Addressed

19. IntelliDrive Network Not Just for Safety

20. IntelliDrive Connectivity Will Support
Active Safety applications to prevent crashes
Information-Rich Infrastructure for
mobility
efficiency
infrastructure management, and
road weather applications
Additional Applications to support
environmental stewardship
livable communities
Traveler convenience and choice

21. and System Managers in Real Time
Future Vision: IntelliDrive Ultimately Will Connect All Infrastructure Users
and System Managers in Real Time
Commercial Vehicle Fleet Owners and their Drivers
Transit System Managers, Drivers, and Passengers
Pedestrians
Bicyclists

22. For More Information