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PTV AG

PTV AG. Report of some European experiences, facts and perspectives. Dr. Rainer Schwarzmann, PTV AG (Germany) Transport Consulting Division August 2008. Overview. Some words about PTV Short profile of Transport Consulting PTV‘s experiences in ATM ATM policies in Germany ATM measures

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PTV AG

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  1. PTV AG Report of some European experiences, facts and perspectives Dr. Rainer Schwarzmann, PTV AG (Germany) Transport Consulting Division August 2008

  2. Overview • Some words about PTV • Short profile of Transport Consulting • PTV‘s experiences in ATM • ATM policies in Germany • ATM measures • ATM benefits • Perspectives

  3. Introduction - PTV AG • Founded 1979 • Locations Karlsruhe, Germany + 6 other in Germany • Subsidiaries 19 worldwide • Staff 700 +

  4. Headquarter and offices in Germany

  5. Total performance of the PTV group PTV AG PTV Group

  6. Worldwide International branches and partners Europe Branches Partners

  7. PTV America, Inc. • Founded 1997 (Innovative Transportation Concepts) 1982 (TModel Corporation) • Locations Portland, OR Tacoma, WA Vancouver, BC Wilmington, DE Austin, TX • Staff 30+

  8. Traffic Mobility Business units PTV AG PTV AG Logistics

  9. Transport Consulting • Scope of services (Units) • Transport Planning (Master Plans, Impact Studies, Forecasts) • Public Transport Planning (Supply, Operation) • Transport Economy (Appraisals, special consultancy services) • Traffic Control and Management (Urban, Freeway, Tunnel) • Road Design and Equipment (Support in Design, Procurement services) • International Consulting Planning projects • International Consulting ITS/Traffic Management

  10. Transport Consulting • Specific services Traffic control and Management • ITS Master plans and strategy development • Operation and institutional concepts • Financial schemes (PPP) • System architecture and technical design concepts of • Urban Traffic control centers • Interurban/Freeway Traffic control/ATM systems + detection and communication networks • Tunnel monitoring and control systems • Design of ATM devices (VMS, road equipment) • Procurement and Tendering Services • Supervision of construction and implementation of ATM systems • Impact Analysis of ATM • Risk analysis road tunnels (evacuation issues, fire events) • National and European Research Projects ITS/Traffic Management

  11. System Architecture for Traffic Control • Planning of the main elements • data acquisition facilities to acquire current traffic and environmental data on site • data preprocessing and processing incl. the elaboration of a suggested control measure in a traffic control centre or sub-centre • data transmission between traffic data acquisition facilities and central facilities • information transmission to the road users, for example by means of variable message signs. • Vast experience in Germany and Austria • Many projects since the eighties • Major contractor for Austrian Motorway company (ASFINAG)

  12. Operating Principle of all ATM Systems Detection collection of traffic data traffic flow Aggregation of traffic data Analysis and procession of traffic data Decision generation of display data Action display Units

  13. System Architecture for Active Traffic Control

  14. System Architecture for Traffic Control- Special Subsystems: ASFINAG Video-Monitoring System

  15. Germany‘s ITS Policy framework • Background • Massive growth of traffic volumes • Especially on motorways • Especially of heavy goods vehicle traffic • Lack of opportunity and funds (!) for extension of physical road infrastructure • Philosophy • Active Traffic Management has been seen as “repair” for a long time • Construction, extension and adequate dimensioning of roads was the first choice • ATM is not a standard feature for new motorways • Since 1980’s implementation programs (also driven by industrial support ideas) • In the meantime established based on good experiences • Safety • Capacity and quality of traffic flow • Reduction of incidents and increase of reliability of the major corridors • Implementation plans and programs in all states • Standards, Rules and Guidelines defined for concepts, devices and communication interfaces

  16. Framework Program • Federal Ministry’s of Transport, Building and Construction and Housing framework programs for traffic control on federal motorways: • 1981 to 1990: budget approx. 140 mill. € • 1991 to 1995: budget approx. 220 mill. € • 1993 to 1997: budget approx. 325 mill. € • 1996 to 2001: budget approx. 300 mill. € • 2001 to 2007: budget approx. 200 mill. € • But Compare: Annual budget for road construction approx. 10 Billion €

  17. Costs of Traffic Control Systems • Investment costs [per km road length]: • 0.1 to 0.5 mill. € • Operation and maintenance costs [Percentage of investment costs]: • operating costs: 0.3 to 0.8 % per year • staff costs: 0.2 to 1.5 % per year • maintenance 1.5 to 2.5 % per year

  18. Assignment of Costs to System Components investment costs operating costs

  19. Systems (Planned/realized) in Germany, Northern Part Green lines: Network control Red lines: Section control

  20. Systems in Germany, Southern Part Green lines: Network control Red lines: Section control

  21. ATM-measures: Collective Traffic Control Systems • Network control/ Route guidance systems • variable direction signs • information panels • Section control systems • speed control • hazard warning (weather, congestion, accidents, road works) • tidal flow/dynamic lane assignment • Temporary Hard shoulder use • Interchange control systems • merging aid • access control (ramp metering)

  22. Route Guidance by Variable Direction Signs • Influencing the road user‘s route choice. • by substitutive variable direction signs or • by additional variable direction signs • It is generally used for the deviation of through-traffic of a network mesh (long-distance traffic) • due to a congestion on normal/alternative route • to harmonize the traffic volumes in network

  23. Example of Substitutive Variable Direction Signs • Source: Deutsche Aerospace AG

  24. Example of an Additive Variable Direction Sign • Source: Dambach-Werke GmbH

  25. Route Guidance by Information Panels • Alternatively use of information panels at important (route choice) decision points of the road network. • For the local road user– experienced by daily use • To be warned of incidents or hazards • To change route

  26. Example of an Information Panel • Source: Dambach-Werke GmbH, • Dambach-Vario-System

  27. Network Control by dWiSta Panels • Additive direction signs are increasingly replaced by dWiSta panels (dWiSta = dynamic direction signs with integrated congestion information). • Being freely programmable they provide • a greater variety of display possibilities and • Higher flexibility in use for more possible applications.

  28. Recently introduced dWiSta Panel

  29. Management of Urban Access by dWiSta Panel

  30. . . . Implementation

  31. Section Control • Section control includes all systems which at several display points along a road section • indicate a speed limit • warn the road user of traffic-conditioned hazards (congestion, roadwork, accident etc.) • warn the road user of weather-conditioned hazards (fog, wetness, ice etc.) • Subtract/ add lanes (lane signalization). • by means of variable message signs.

  32. Displays of a Section Control System

  33. Example of a Section Control System • Source: Dambach-Werke GmbH, Traffic control system A5

  34. Effects of Speed Control • Reduction of the standard deviation of local speeds • due to • smoother traffic flow • greater capacity • harmonisation of traffic flow.

  35. Warning of Hazards • Warning of traffic-conditioned hazards: • congestion warning • roadworks • accident • Warning of weather-conditioned hazards: • fog • wetness • ice • In Approach of dangerous spots a speed funnel is used.

  36. Example of Congestion WarningIncluding Speed Funnel Source: Dambach aktuell

  37. Tidal Flow Systems • Allocation of lanes according to varying traffic loads • Variation in different peak hours • Variation due to special demand situations (events) • The information on the current allocation of lanes is given by • overhead arranged lane signals • green arrow for free lane • yellow flashing arrow for lane to be cleared • red cross for blocked lane • lane allocation panels positioned at the roadside.

  38. Example of Tidal Flow Systems on Motorways • Source: Dambach-Werke GmbH, Road traffic management systems

  39. Example of a Tidal Flow Systems on Motorways

  40. Example of Tidal Flow Systems on Federal Roads • Source: Ingenieurbüro Verkehrstechnik Karlsruhe

  41. Example of a planning work for a Section Control System on Motorway including Tunnels

  42. Intersection Control • Maintenance of traffic flow and weaving at highly loaded interchanging sections • merging aid (lane allocation) – „relative“ of tidal flow systems • ramp metering (access control)

  43. Example of Merging Aid • Source: Landschaftsverband Rheinland, • Traffic control system A3

  44. Exit control with dynamic lane allocation • Overhead direction signing supplemented by in-road signaling • Source: Siemens ATD SV

  45. Temporary hard shoulder use • „The latest“ in ATM! • Increase of capacity for peak periods • Support of accessing traffic in highly loaded weaving sections • Stabilization of traffic flow • In fact a combination of various ATM-elements • Detection • Video-monitoring • Control centre (decision) • Variable message signs • Special case of tidal flow system • Many realization projects • Already realized and in operation on motorways in two states • Other states to follow after implementation of the base systems • Strong political pressure

  46. Example of design work for section control system with Hard shoulder use functionality

  47. Temporary hard shoulder use – Impact Analysis by simulation

  48. What are the benefits?

  49. Accident rates before and after installation of section control systems

  50. Safety Impacts of a Section Control System - on the Federal Motorway A5

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