the future development of traffic signals and the impact of autonomous vehicles
TRANSCRIPT
The Future Development of Traffic Signals
and the Impact of Autonomous
Vehicles
Graeme Pattison
• Brief history of signals• Where technology is now• The Autonomous Vehicle situation• Current signal developments• Signal ITS developments• What the future may bring
Traffic signals are used to improve traffic flow
And to improve road safety
Conflict points at a simple intersection
The first road traffic signals and J P Knight
Public education for road safety 1868
a
Lester Wire, with his two color traffic signal
http://designobserver.com/feature/red-light-green-light--the-invention-of--the-traffic-signal/8627/
An acetylene gas light beacon USA
Sydney’s first traffic signals at Kent and Market Sts 1933
The Electromatic ControllerNeon tube timer with cam and relays
A pedestrian ‘PJ” signal controller – designed in-house
Sydney’s CBD VC4 controller also designed in-house
VC4 controller programming using plug in links
The AWA Unitac controller – valves, uniselectors, relays and happy technicians
The world’s first microprocessor based controller – DMT/Philips 1974
The signal lantern design has changed little in 80 years
Victoria Rd Gladesville showing a concrete
mast arm
Melbourne’s 1928 clock face style traffic signals
The first signals push button
There were many design types before signals became standardised
Early NSW vehicle detector using a rubber tube embedded in the pavement and a pressure switch
SCATS creator Arthur Sims
Proposed holographic signal
An actual traffic signal using projection onto a water curtain – SHT SoftStop
Eurokey for WALK time extension GreenMan Plus for elderly, Singapore
Krabi Thailand
Intelligent Lantern innovations
Adding timing displays
Yet more lantern concepts
http://www.dezeen.com/2014/09/17/interactive-dancing-traffic-lights-installation-smart-car-lisbon/
Animated Lanterns
Smartphone Signal Apps
Autonomous Vehicle communication links
Vehicle to Vehicle (V2V) and Vehicle to Infrastructure (VTI) concept
V2V, V2I and Traffic Control Centre
Early Vehicle to Vehicle Communications (V2V)
http://www.sae.org/misc/pdfs/automated_driving.pdf
Google autonomous vehicle operation
Identifying what’s at the intersection
Planning the route
Anticipating every movement
Covering signs, signals, vehicles, bikes, pedestrians, topography
http://e2e.ti.com/blogs_/b/tilive/archive/2015/03/17/lidar-cameras-radars-action-the-road-to-autonomous-vehicles?keyMatch=vehicle%20sensors&tisearch=Search-EN-Everything
Many sensor systems are required
An early Australian one horsepower autonomous vehicle
A wide angle multi-approach video vehicle detector(GridSmart)
Combined video and thermal detector for vehicles and pedestrians
Every driver is acting autonomously
Vehicles operating autonomously may not be efficientArc de Triomphe, Paris
Slot based intersection control
Signal priority for sale
The CITI Project(Cooperative Intelligent Transport Initiative)
Australia’s first cooperative ITS deploymentNSW Centre for Road Safety, NICTA
• Seven signal sites• 200 heavy vehicles• 50 light vehicles• 10 buses• 1 level crossing• V2V and V2I
• Red traffic signal alerts• Speed Limit warnings• Collision warnings• Heavy braking alerts
New system announced for over 100 trucks and 100 intersections on Parramatta Rd, Pennant Hills Rd and King Georges Rd
SPaT(Signal Phase and Timing)
Communicates signals information to approaching vehiclesIncreases “Time Horizon” by providing coming phase changes
before signal display changes
Demonstration video http://youtu.be/wznpUv2PucQ
SCATS development for vehicle priority
The award winning Queensland Vehicle Priority & Pre-emption System
Demonstration of long distance on-road truck platooning (Rotterdam, April 2016)
https://www.youtube.com/watch?v=G-xOEJb4LEU
end