Page 36 - MJC submissions

STEPS TOWARDS AN AGREED STATEMENT OF FACTS
And stipulations

7.5 Comments on Key Elements: Traffic Flows (Continued)
The report includes many superficially impressive tables which are examined in the
Appendices and summarised below in rows A and B. Rows C to G are additional to those in
the transport statement and are included for explanatory and comparison purposes:
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Table 8: Analysis of the TRICS database

Row A shows a factor of 2.171 for arrivals between 8.00 and 9.00am. at an office building
This suggests that for a building of EDF’s size, 66 vehicles would arrive and, based on a factor
of 0.296, that 9 vehicles would depart with total daily vehicles movements (Vpd) of 500.

Row B shows that for peak hour departures from a block of 71 residential flats a factor of
0.241 should be applied, suggesting that 17 vehicles would depart and in the case of 120 flats
(Row C) that 29 vehicles would head out with total daily movements (Vpd) of 245 daily
movements and a “saving” of 51.09%. The findings are below the WSCC threshold of 30 vph

The TRICS Best Practice Guidance sets out how calculations should be made, and an
audit trail retained. This was not followed in the Transport Report .
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It is not clear which of the databases were used to produce the TRICS estimated flows
although the inference is that eleven of those on Table 7:page 25 were averaged to produce
row B. They therefore relate to a hypothetical development of 42 flats, somewhere in the
36
ether between Kent and Cumbria.

The user’s selection of databases is critical and can produce results varying by over
400%.

35 And the WWSS “Transport Assessment Methodology that requires the production of all input schedules
36 In the main