minute with standard deviations of 15, 26, and 5 minutes, respectively. A list of ATRI truck GPS data fields for each dataset is included in Table 2-2.
There are no Automatic Traffic Recorders (ATR) that collect vehicle classification counts located on the metropolitan freeway system within the 494/694 ring, and only 1 ATR on the ring (I-694 in Oakdale) which would be heavily influenced by through truck trips as that is the designated through route to avoid travelling through the downtowns. In addition, 1 Weigh-in- Motion (WIM) counter is on the freeway US-52 within the ring and would provide vehicle classification data. There are also 2 ATRs on County Highways within the ring that are also vehicle classification capable; however, truck movements on these highways could be very different in composition and purpose than those on the freeway system. Data for this study
minute with standard deviations of 15, 26, and 5 minutes, respectively. A list of ATRI truck GPS data fields for each dataset is included in Table 2-2. There are no Automatic Traffic Recorders (ATR) that collect vehicle classification counts located on the metropolitan freeway system within the 494/694 ring, and only 1 ATR on the ring (I-694 in Oakdale) which would be heavily influenced by through truck trips as that is the designated through route to avoid travelling through the downtowns. In addition, 1 Weigh-in- Motion (WIM) counter is on the freeway US-52 within the ring and would provide vehicle classification data. There are also 2 ATRs on County Highways within the ring that are also vehicle classification capable; however, truck movements on these highways could be very different in composition and purpose than those on the freeway system. Data for this study
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