Naturalistic Driving Study: Development of the Roadway Information Database (2014) / Chapter Skim
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10 C h a p t e r 3 3.1 Introduction The research team built the RID from two primary sources of data. These sources included new roadway data collected through the mobile data collection project (about 12,500 centerline miles)
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11 study period were identified, and roads where crashes occurred were collected in a clean-up round in fall 2013. 3.3 allocation Guidance: Within Sites (Which roads?
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12 Figure 3.2. Sample NDS participant route map.
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13 assess whether the mobile data were collected on roads where these crashes occurred. Several crashes in five sites (IN, NC, NY, PA, and WA)
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14 Total Miles = 4,366 Rural = 45% Urban = 55% Figure 3.4. Florida data collection plan.
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15 Total Miles = 4,635 Rural = 64% Urban = 36% Figure 3.5. Indiana data collection plan.
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16 Total Miles = 4,558 Rural = 63% Urban = 37% Figure 3.6. North Carolina data collection plan.
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17 Total Miles = 3,670 Rural = 83% Urban = 17% Figure 3.8. Pennsylvania data collection plan.
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18 3.5 Data Collection requirements The mobile data collection contractor, Fugro Roadware, was required to collect the following roadway attributes. Fugro drove the right lane in each direction.
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19 establishing the data collection process, determining feasibility of minimum accuracies, and testing the quality assurance process. 3.6 project Management plan The two contracting teams (Iowa State University and Fugro)
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20 Figure 3.12 shows an example for capturing speed limit sign location and message information. Data deliveries from the mobile data collection vendor to the Iowa State University research team were provided in batches of approximately 500-mile increments every two weeks, based on a preestablished delivery schedule.
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