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Best Use of Traffic Counting Stations

Best Use of Traffic Counting Stations. David C Hamilton Datagen Ltd. Viking Workshop Copenhagen Denmark 5 – 6 October 2005. Introduction. Scottish Roads Traffic Database (SRTDb) holding the data from: 1350 stations; including 350 ATC; 450 JTC Inductive loops

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Best Use of Traffic Counting Stations

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  1. Best Use of Traffic Counting Stations David C Hamilton Datagen Ltd Viking Workshop Copenhagen Denmark 5 – 6 October 2005

  2. Introduction • Scottish Roads Traffic Database (SRTDb) holding the data from: • 1350 stations; including 350 ATC; 450 JTC • Inductive loops • Entire trunk road network (3400 km) • Presentation: • Old Specification • New Specification • Emerging Methods Viking Workshop Copenhagen Denmark 5 – 6 October 2005

  3. Old Specification • Single loop per traffic lane – volumetric only • Cabinet • Counter • Power source (battery or solar) • Manual data retrieval • Cost = above plus traffic management at installation (approx. £2,800 for 2 lanes) Viking Workshop Copenhagen Denmark 5 – 6 October 2005

  4. New Specification • 2 loops per traffic lane – speed and class • Cabinet • Counter • Power source (solar or mains) • Retrieval by telemetry (land line or mobile) • Cost = approx. £3,300 for two lanes. Paid back in one to two years due to lower operational costs. Viking Workshop Copenhagen Denmark 5 – 6 October 2005

  5. Benefits of New • Vehicle class (EUR 6) and speed • Congestion monitoring • Pseudo journey time data • Telemetry • Faster identification of problems • Allows Vehicle by Vehicle data collection • Power usage increase • Vehicle by Vehicle option • Better fault diagnosis • Improved data analysis • Lower Operational Costs Viking Workshop Copenhagen Denmark 5 – 6 October 2005

  6. Vehicle by Vehicle • Date, Time, Lane, Direction, Speed and Class of every vehicle • Improved Analysis • Platooning • Gap/Headway measurements • Flexibility • Downside • Storage • Telemetry costs increase Viking Workshop Copenhagen Denmark 5 – 6 October 2005

  7. Emerging Methods • Event Monitoring • Live congestion monitoring • Incident detection • Weather station data collection • CCTV and still digital images Viking Workshop Copenhagen Denmark 5 – 6 October 2005

  8. Summary • Speed : safety analysis, congestion monitoring and event monitoring • Telemetry : reduced operational costs, improved fault identification and, VBV feasible • VBV : gap/headway analysis, user-specified speed analysis and improved diagnostics • Cost of installation - little change Viking Workshop Copenhagen Denmark 5 – 6 October 2005

  9. Best Practice • When installing a loop site, ensure that the infrastructure – loops, cabinet, power source – are to a basic standard capable of speed and class data collection. Consider VBV data collection and telemetry too. • Priority 1 = 2 loops • Priority 2 = telemetry • Priority 3 = VBV • This is not just a local best practice. Viking WorkshopCopenhagen Denmark 5 – 6 October 2005

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