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02
City of Pleasanton
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5/14/2009 2:40:52 PM
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5/13/2009 4:49:23 PM
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CITY CLERK
CITY CLERK - TYPE
STAFF REPORTS
DOCUMENT DATE
5/19/2009
DESTRUCT DATE
15 Y
DOCUMENT NO
02
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Dowling Associates, Inc. <br />Transportation Engineering Planning Research Education <br />Trip Assignment <br />Trip assignment input assumptions (capacities by facility type, speed -flow curves, etc.) will be reviewed for <br />validity and recommended changes, if any, will be documented for the City's review. <br />Review and Update Cut Through Assumptions <br />Dowling proposes that quantification of external trips continue to be based on traffic counts at each of the <br />model gateways. The traffic counts will be split into trip purposes using information from the MTC model. <br />Work trip assumptions (in- commute versus out- commute) will be checked against data from the 2000 Census <br />CTPP. The regional model will also be used to determine growth rates for the external trips. For both the <br />base and future years, the external trips will be adjusted to balance with the Pleasanton trips calculated from <br />the trip generation rates. <br />If additional origin- destination surveys are required, Quality Counts could be available to support City Staff <br />1.6 MODEL VALIDATION <br />The revalidation for the Pleasanton model will once again include screenline validation, road type validation <br />and dynamic validation. The validation will consider daily, AM and PM peak hour traffic. <br />Screenline Validation <br />The current screenlines as shown below are recommended for the City of Pleasanton model revalidation. A <br />typical goal would be for total model- estimated traffic across the screenline to be no more than ten percent <br />higher or lower than the total traffic counts on each sctccnline. <br />City of Pleasanton <br />2009 Traffic Model Update <br />8 <br />May 13, 2009 <br />
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