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Road Information System: A Decision Support Tool for Road Management

This article discusses the Road Information System and its use as a decision support tool in road management. It covers the data requirements, adaptation to local conditions, and the various inputs and factors that can influence the management plan. The importance of accurate data collection and its impact on the reliability of the plan is highlighted.

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Road Information System: A Decision Support Tool for Road Management

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  1. INTRODUCTION • ROAD INFORMATION SYSTEM • ROAD MANAGEMENT PLAN • HDM4 - A DECISION SUPPORT TOOL • FETCH DATA FROM ROAD INFORMATION DATABASE • ADAPTATION TO LOCAL CONDITION

  2. MANAGEMENT PLAN

  3. HDM4 DATA VOLUME • DATA REQUIREMENT IS LARGE • 159 FOR ROAD SECTION • 160 FOR VEHICLE FLEET • MAINTENANCE DATA • MOST OF THE VALUES ARE DEFAULT • SOME ARE COMPULSORY INPUT • TRAFFIC DATA INFLUENCE VOC, • INTERVENSION • WORK STANDARDS

  4. ROAD SECTION DATA • TRAFFIC FLOW PATTERN • SPEED FLOW TYPE • ROAD TYPE • DIRECTION • SPEED LIMIT • ENFORCEMENT • SPEED REDUCTION FACTOR • FRICTION FACTOR • NMT

  5. TRAFFIC FLOW DATA • TOTAL TRAFFIC VOLUME • VEHICLE COMPOSITION • HOURLY FLOW • DIRECTION OF FLOW • AADT FROM PAST RECORDS • GROWTH RATE • FIELD SURVEY • PAST RECORDS • MANUAL AND OTHER METHODS

  6. VEHICLE FLEET

  7. VEHICLE CHARACTERISTICS • VEHICLE NAME • VEHICLE CATEGORY • VEHICLE CLASS • BASE TYPE • VEHICLE PCSE • FREE SPEED • FIELD SURVEY • AVARAGE OCCUPANCY

  8. ECONOMIC AND FINANCIAL COST • VEHICLE • TYRE • TYRE RETREADING • CREW WAGE • MAINTENANCE LABOUR • FREE SPEED • FIELD SURVEY • AVARAGE OCCUPANCY

  9. ECONOMIC AND FINANCIAL COST • INTEREST RATE • FUEL TYPE AND COST/LIT • LUBRICANT • AVERAGE ANNUAL KM RUN • AVARAGE ANNUAL HOUR RUN • % OF NON HOME WORK TRIPS • VALUE OF PASSENGER WORK AND NON WORK TIME • VALUE OF GOODS HOLDING TIME

  10. AXLE LOAD • TO TRANSFER VEHICLE LOAD TO STANDARD AXLE LOAD • NOTE VEHICLE NAME, CATEGORY, TYPE AND NUMBER OF AXLES • BRING ONE WHEEL OF EACH AXLE OVER THE WEIGH BRIDGE AND RECORD

  11. AXLE LOAD (Cont..) • TRANSFER DATA TO A FREQUENCY TABLE • GET DAMAGE FACTOR FOR EACH VEHICLE • GET TOTAL AXLE LOAD FOR EACH AXLE • GET EASL FOR EACH VEHICLE TYPE

  12. AXLE LOAD SURVEY TABLE -1

  13. SPEED MEASUREMENT • RADAR SPEEDOMETER • SELECTION OF SAMPLE VEHICLES • DIFFERENT HOURS OF SURVEY • AVOID OVERTAKING SITUATION • EXPERIENCED TECHNICIAN • REQUIRED FOR SPEED FLOW CURVE

  14. CONCLUSIONS • COLLECTED DATA ON TRAFFIC AND VEHICLE IS COMPULSORY INPUT TO HDM • RELIABILITY OF MANAGEMENT PLAN DEPENDS UPON ACCURATE DATA • AADT, GROWTH RATE, EASL INFLUENCE VOC, INTERVESION

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