ODYSA IN-CAR GREEN WAVE
Description
Red traffic lights are a cumbersome business. It takes effort to gear down and back up again, not to mention the environmental cost of increased carbon emissions every time you get going again. When compared to cruising, stopping at a traffic light causes a car to emit four times the pollution, according to Environmental Research Web. A stopping bus emits 11 times as much pollution as when it’s cruising.
ODYSA green wave is project initiative that is getting cars to cruise through traffic lights. A person could drive 40 mph and hit a red light, but if driving at 30 mph, by the time you reach the light, it will have turned green again and the car can cruise through without stopping.
Objectives
The objective is to offer the best approach speed advice to cross a traffic intersection without stopping. The signal is sent to a registered SPITS user via a SPITS RSU. The RSU combines the data with the geographical area and broadcasts the signal via 802.11p.
Inputs
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SPITS OBU (Accelerometers, Gyro-meters, GPS receiver, external USB devices)
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SPITS RSU (Cameras, wifi-p)
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Traffic control algorithm (developed by DTV)
Benefits
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With the SPITS implementation, drivers are much less distracted and need not look for the road sign
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Vehicle pollution is reported to reduce (as tested in pilot projects)
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Depending on the speed advice, driver may not have to stop at a signal
Limitations
Odysa in-car green wave
Developed by
Project Status
Communication Protocol
Peek Traffic
Demonstrated
IEEE 802.11p CALM FAST
Project Outcomes
In a pilot project following similar principles, it was found that 70 percent of users adapted their speed and said they would be willing to pay for the information if necessary.
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The application tested uses wifi-p to transmit speed advice from RSU to the driver. So it requires a separate OBU with wifi-p support rather than relying on cellular communications
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Users may not be willing to pay extra money just for the same info that is displayed for free with a digital signboard shown in-car
Scorecard
Refer to “Evaluation” for details on scoring.