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A-1 A P P E N D I X A Agency Survey Questionnaire NCHRP SYNTHESIS 20-05, TOPIC 49-15 SUMMARY OF PRACTICE FOR AUTOMATED PAVEMENT CONDITION SURVEYS QUESTIONNAIRE The following includes the proposed questions to be included in the agency questionnaire. The proposed questions include yes/no responses and space for users include comments as needed and ask the user to select from a specific list of responses. Dear Agency Pavement Management or Data Collection Representative, The Transportation Research Board (TRB), through the National Cooperative Highway Research Program (NCHRP), under the sponsorship of the American Association of State Highway and Transportation Officials (AASHTO), and in cooperation with the Federal Highway Administration (FHWA) is preparing a synthesis report on a Summary of Practice for Automated Pavement Condition Surveys. The purpose of this questionnaire is to identify and summarize the procedures and practices used by highway agencies for conducing automated pavement condition surveys. The results of the survey will be incorporated into a synthesis of highway agency practice, with the intent of helping agencies evaluate and improve their current pavement data collection practices. This survey is being sent to the state highway agency Pavement Management Engineer for each state highway agency and to the Transportation Association of Canada (TAC) representative for distribution to applicable Provincial employees. If you are not the appropriate person at your agency to complete this questionnaire, please forward this request to the correct person. Please compete and submit this survey by March 30, 2018. We estimate that it should take no more than 5 minutes to complete. If you have any questions or problems with operation or access to the questionnaire, please contact our principal investigator Dr. Linda Pierce at (505) 603 â 7993 or email@example.com. QUESTIONNAIRE TIPS â¢ If you are unable to complete the questionnaire, you can return to the questionnaire at any time by reentering through the survey link as long as you access the questionnaire through the same computer. Reentering the survey will return you to the last completed question. â¢ Survey navigation is conducted by selecting the âprevâ (previous) or ânextâ button at the bottom of each page (revise as necessary after survey has been set up). Thank you for your time and expertise in completing this important questionnaire.
A-2 Automated Pavement Condition Surveys â¢ Manual condition surveys â surveys are conducted by walking or traveling at slow speed and noting the existing surface distress and may be limited to selected segments or span the entire roadway length. â¢ Automated surveys â surveys typically incorporate the use of vans fitted with equipment specifically designed for collecting pavement and roadway features. Images and transverse and longitudinal profiles of the roadway surface are captured at highway speeds for use in assessing pavement condition. â¢ Semi-automated processing â results of the automated survey are viewed at workstations by trained personnel to visually identify pavement surface distress (e.g., cracking, patching, spalling). Proprietary software is used to display images and record distress. Sensor data is processed automatically (i.e., no user interference) for determining IRI, rut depth, and faulting. â¢ Fully automated processing â collected images and pattern recognition technology are used to automatically (i.e., no user interference) detect surface distress. Systems may include video and/or laser technology to detect and classify pavement cracking in real-time at highway speeds. Other systems capture the pavement images first and use automated post-processing to detect and classify cracks. As with semi-automated processing, the sensor data is processed automatically (i.e., no user interference) to determine rut depth, IRI, and faulting. QUESTIONS Contact Information Name _________________________________________ Organization ___________________________________ Phone Number _________________________________ Email Address __________________________________ 1. Which collection method is used by your agency to assess pavement condition (excluding IRI, faulting, or rutting)? Manual (skip to question 3) Automated (skip to question 4) Both manual and automated 2. Please specify where each method is conducted (select all that apply). If survey method is based on pavement condition/distress types, leave this question blank and respond to questions 7 â 9. Automated â Interstate only Manual â Interstate only Automated â NHS only Manual â NHS only Automated â Principal Arterial Manual â Principal Arterial Automated â Minor Arterial Manual â Minor Arterial Automated â Major Collector Manual â Major Collector Automated â Minor Collector Manual â Minor Collector Automated Other (please specify) Manual Other (please specify) DEFINITIONS The following definitions are used in conjunction with the agency questionnaire:
Agency Survey Questionnaire A-3 3. Why has your agency not transitioned to semi- or fully automated methods (select all that apply)? Cost of automated equipment or vendor services Accuracy concerns with automated data collection Hesitancy to transition from manual to automated surveys Impact on results/outcomes have not been fully assessed Issues with changing technology Other (please specify) If response to question 1 is âManual,â skip to question 7. 4. Does your agency use agency equipment and personnel or vendors for automated data collection (select all that apply)? Agency conducts data collection Agency conducts data analysis Vendor conducts data collection Vendor conducts data analysis 5. How long has your agency been using automated pavement condition data collection? 1 â 4 years 5 â 10 years > 10 years 6. What asphalt pavement condition/distress types are collected by your agency? Please specify the survey method for each condition/distress type (select all that apply)? Condition/Distress Types Fully Automated Semi- Automated Manual International Roughness Index (IRI) Alligator cracking Bleeding Block cracking Bumps and sags Corrugation Cross slope Depression Edge cracking Lane/shoulder drop off Longitudinal cracking Patching Polished aggregate Potholes Raveling Reflection cracking Rutting Shoving Texture Transverse cracking Weathering Other (please specify)
A-4 Automated Pavement Condition Surveys 7. What plain jointed pavement condition/distress types are collected by your agency? Please specify if condition distress is collected using automated or manual surveys (select all that apply)? Condition/Distress Types Fully Automated Semi- Automated Manual IRI Blowups Corner cracking Cross slope Durability (âDâ) cracking Faulting Joint seal damage Lane/shoulder drop off Longitudinal cracking Map cracking Patching Polished aggregate Pumping Punchout Scaling Spalling Texture Transverse cracking Other (please specify) 8. What continuously reinforced concrete pavement condition/distress types are collected by your agency? Please specify if condition distress is collected using automated or manual surveys (select all that apply)? Condition/Distress Types Fully Automated Semi- Automated Manual IRI Blowups Cross slope Durability (âDâ) cracking Joint seal damage Lane/shoulder drop off Longitudinal cracking Map cracking Patching Polished aggregate Punchout Scaling Spalling Texture Transverse cracking Other (please specify)
Agency Survey Questionnaire A-5 9. What best describes your agencyâs frequency of pavement condition data collection (select all that apply)? Interstate only annually Interstate only every 2 years NHS annually NHS every 2 years Primary and secondary provincial highways annually Primary and secondary provincial highways every 2years Non-NHS annually Non-NHS every 2 years Non-NHS every 3 years Non-NHS every 4 years Other (please specify) 10. Rather than ask for detailed information in this survey, each responding agency is asked to provide documentation that reflects your agencies automated pavement condition data collection procedures. This may include vendor Request for Proposal (or Qualifications), data quality management plan, agency procedural manual, etc. Please provide as much information as possible so that the synthesis can accurately reflect agency practice (revise as necessary after survey has been set up). 11. The synthesis will also include case examples illustrating agency practices using automated pavement condition data collection. The development of the case study may require an additional follow-up interview. Agencies will be provided the opportunity to review the case example write-up for accuracy. Would your agency be interested in participating in a case study? Yes No FOLLOW-UP QUESTIONS Upon completion and review of the agency questionnaire, the contractor will conduct email or phone interviews with agencies who indicated the use of automated data collection equipment. The follow-up questions will be sent by email to the person who responded to the agency questionnaire. Respondents will be asked to either reply back to the email or indicate a date and time when a phone interview can be conducted. The proposed follow-up questions include: 1. Why did your agency decide to implement automated pavement condition surveys? Please describe your challenges and success with automated pavement condition surveys. 2. Automated data collection details: a. How many collection vehicles are used by the agency or by the vendor? b. How many months are required to collect pavement condition? What is the length of your data collection contract and how are these contracts renewed? c. How many miles are surveyed? d. How many people are involved in data collection (in each vehicle and total)? e. How many people are involved in post-processing the data? f. Do the same people collect and process the data or does an engineer or higher level staff process the data after being collected? 3. Data collected by vendor: a. What criteria (qualifications, experience, cost) is used for vender evaluation? Is the required criteria weighted, if yes, what are the weighting values? b. Is the vendor required to collect data on selected sections as part of the proposal submission? How is the data collected from these sections used in the RFP evaluation?
A-6 Automated Pavement Condition Surveys c. Have you experienced issues when changing vendors and how have you addressed these issues? d. How does your agency ensure the quality of the collected data over the life of the vendor's contract (i.e., during one season's data collection interval and from year to year)? e. How does your agency ensure data quality and continuity when moving from one vendor to another? f. How are conflicts between agency and vendor resolved? 4. Data collected by agency personnel: a. Have you experienced issues when changing equipment/technology and how have you addressed these issues? b. How does your agency ensure the quality of the collected data? 5. Please describe the process used by your agency for integrating automated data collection into your pavement management system. What changes if any were made to implement the automated data collection? 6. Data format: a. Do you require a standard file format? b. Do you request the vendor to provide you the raw data file? c. Do you analyze the raw data? If yes, what information is obtained? 7. Were any research efforts conducted to relate manual to automated survey results? Did the adoption of automated pavement condition surveys eliminate any historical distresses that were not able to be identified using automated methods? 8. What other uses of pavement condition data has your agency implemented? 9. What other data are collected as part of the automated survey (e.g., ROW images, LiDAR, etc.)? 10. How is automated pavement condition data used in the decision-making process? 11. What efforts are you conducting or are needed for federal performance management requirements? How have the federal performance management requirements influenced/affected the need to have an automated pavement condition survey conducted? Is automated pavement condition data helping the agency meet the federal performance management requirements? 12. How does your agency ensure uniformity and continuity of data between Design-Build-Maintain contract highways and agency highways? 13. Please describe the post-processing efforts (requirements) for automated pavement condition data. This includes computer requirements and time to process data using either semi-automated or fully automated techniques. 14. What are your storage requirements for automated pavement condition data? 15. What archival requirements are being used for automated pavement condition data? 16. What are your annual costs for conducting automated pavement condition surveys? Please include the number of lane-miles (or lane-kilometers) for this estimate. 17. What is the annual cost associated with following your data quality management plan. If vendor data collection, what cost is associated with the vendor effort and what cost is associated with your agency effort? 18. Please identify any research needs for automated pavement condition data collection. 19. If you havenât submitted your documents/information could you please do so?