dynamic traffic control yishai goldstein & nahum nir computer science & engineering hebrew...
Post on 20-Dec-2015
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Dynamic Traffic Control
Yishai Goldstein & Nahum Nir
Computer Science & EngineeringHebrew University
The Goals
• To minimize annoyances in the driving experience
• To help the driver reach his or her destination quickly
Aggravation
• When a car does not drive smoothly it will “accumulate” aggravation
• This aggravation can be represented as some number
• Each car starts off with some aggravation
Traffic Light Algorithm
• The more aggravation there is at a stop light – the more likely the stop light is to turn green
• No one waits forever
• Emergency vehicles may be provided with a switch for “infinite aggravation”
Signs Today• Example:
• Problem:
Different routes maybe preferable, depending on the present traffic
• Solution:
Have signs change dynamically according to present traffic, just as our traffic lights.
Traffic Sign Algorithm
• Same infrastructure (Hardware)
• Internet routing
• Dijksra’s algorithm for shortest path
• Path measured by cars
User Interface Overview• The user - driver, will be exposed
to traffic lights and directional signs, just as a driver is today
• Drivers will not need to learn a new system
• They will not even need to be aware that the system had been changed
Is Big Brother Watching?
• No information of specific vehicle is used (unlike cell-phones)
• Extra information can be added if needed
Four wheels good, two legs bad
• What about pedestrians?−When cars have a red light –
people have a green light−Push buttons can be added at
crosswalks
• Not all cars must participate for system to work
Competitors
• Present system in Jerusalem−Camera based−Requires human staff at all
times−Predefined scenarios only
• Pelephone−General directions not specific−No handling of lights
Future Improvements
• Driver can request a specific route−Special screen inside car−Connection to PDAs
• Traffic report
• Statistics accumulator
Hardware
• Intersection Computer
• Sensors
• Traffic Lights
• Traffic Signs
• Network
• Car Transmitter