Using Connected Vehicles to Improve Safety in Work Zones
Transpo Florida
29 October 2012
Introduction Jim O’Neill
GEWI Presentation
2
Agenda
About GEWI.
Local Hazard issue and implications.
Collecting probe data.
Create warning messages.
Encode and distribute TPEG messages.
Present in-car warnings.
Local Hazard Warning Demonstration.
TPEG vs. RDS-TMC.
Questions?
GEWI Presentation
3
GEWI History
Founded in 1992
Hagen Geppert & Dr. Karl Will
Corporations in Germany, USA, and Singapore.
Headquarter in Bernburg (Germany).
Offices in USA, Singapore, UK, and Russia.
Certified by ISO 9001:2001 since 1998.
GEWI Presentation
4
Global Technical Perspective
GEWI Presentation
5
Traffic Market
GEWI Presentation
6
Local Hazard Issue – Work Zone Safety
87,606 reported work zone accidents in 2010 in USA.
Work Zone Injuries - 37,476 injuries in work zones in 2010. This equates to one
work zone injury every 14 minutes (96 a day), or about four people injured every
hour.
Work Zone Fatalities: In 2010, there were 514 fatal motor vehicle crashes in
work zones, resulting in 576 fatalities. These 576 fatalities equate to one work
zone fatality every 15 hours (1.6 a day).
Type of Crash: Of the 720 work zone fatalities in 2008, 41% of crashes were rearend collisions (compared to 16% of all fatal crashes)
GEWI Presentation
7
Implications
Fatalities and injuries.
Safety of maintenance staff working on-site.
Damaged road side equipment (barriers, trailers, cars).
Damaged private cars and trucks.
Road blockages and long traffic jams.
If we could increase driver’s awareness it would help avoid these issues!
GEWI Presentation
8
Local Hazard Warning - Collecting Probe Data

Maintenance vehicles or trailers
are equipped with GPS and GPRS
capable devices.

(http://www.traffic-tim.de/produkte/verkehrssicherheit/divan.html, German
only)

Position, bearing, and status is
sent to a server monitoring all
devices.

Data records are forwarded to the
control center.
GEWI Presentation
9
Processing LHW Data
GEWI’s TIC software receives data records using
DATEX2 Version2.
Geo-matching of GPS data onto the road network.
Creating traffic event messages with geo-matched
location.
Operators evaluate traffic event messages for their
safety relevance. (can also be automated)
Aggregate related messages into a new message for
multiple lane closures
(e.g. “two right lanes closed”).
GEWI Presentation
10
Distribute TPEG messages
TPEG over HTPP (THTTP).
A THTTP Request is send to the server by
the vehicle.
The server gathers all relevant
traffic event messages.
Messages are then coded using
TPEG TEC with DLR1 (AGORA-C).
TPEG messages are packaged and
send back to the vehicle through an
THTTP Response.
GEWI Presentation
11
… in-car display
GEWI Presentation
12
Local Hazard Warning Demonstration
13
Current (RDS-TMC) vs Future (TPEG)
RDS-TMC
Traffic Message Channel (TMC) messages are broadcast over FM or Satellite
using the Radio Data Channel (RDS) with encryption.
Data can be regionalized by dynamically generating message cycles for
individual regions.
Priority can be given to urgent messages.
Can only transmit 300 messages in 15 minutes.
Only the Alert-C standard can be used to transmit traffic events.
Events can only be referenced to TMC locations.
Well established with many RDS-TMC receive devices available.
GEWI Presentation
14
Current (RDS-TMC) vs Future (TPEG)
TPEG
TPEG can be broadcast over digital media such as DAB, HD, Satellite
Radio, TCP/IP, and mobile telecoms (GPRS, UTMS) using TPEG over HTTP.
Two way communication.
Many applications supported to provide more robust information to
traveler.
Travel data can be location referenced to multiple location referencing
methods.
Conditional access: Provides for free or subscriptions services.
High volume of messages may be transmitted (up to 20,000 per 15
minutes)
GEWI Presentation
15
TPEG Applications
TPEG
Many applications already standardized:
-
Parking (PKI),
-
Road Traffic Message (RTM)
-
Traffic Event Compact (TEC)
-
Traffic Flow & Prediction (TFP),
-
Congestion & Travel Time (CTT)
-
Fuel Pricing Information (FPI),
-
Public Transport Information (PTI),
Future: Road pricing, weather
GEWI Presentation
16
Connected Vehicles are Here

More and more maintenance trailers/trucks will be equipped with
GPS/GPRS modules.

Vehicle manufactures incorporating TPEG capable navigation devices into
their cars, e.g. BMW, Audi, … - and you can already buy these cars.

The Local Hazard Warning Service was provisioned for service in 2011.

TIC software already incorporates all the features necessary and as a
COTS product it is cheaper than building your own.
GEWI Presentation
17
TPEG Service Map
Map courtesy of TISA
GEWI Presentation
18
Questions?
GEWI Presentation
19