As documented in the development’s Traffic Impact Analysis, the development would add an estimated 841 vehicle trips in a 24-hour period, with 804 originating from the 66 homes entering from the Blackhawk Road access and 37 vehicle trips originating from the 3 homes that that would access from the McCauley Road entry.
Specifically, of the 804 vehicle trips that would originate from the Blackhawk Road entry, approximately 93 vehicles (31 inbound and 62 outbound) would be generated during the 7:00 – 9:00 AM peak hour, 83 vehicles (50 inbound and 33 outbound) would be generated during the 2:00 – 4:00 PM (school) peak hour, and 68 vehicles (43 inbound and 25 outbound) would be generated during the 4:00 – 6:00 PM (commute) peak hour.
Of the 93 AM peak hour vehicles, 62 vehicles would exit the development on to Blackhawk Road with 40 vehicles traveling west on Diablo Road and 22 vehicles traveling east on Blackhawk Road.
Of the 83 school PM peak hour vehicles, 33 vehicles would exit the development on to Blackhawk Road with 20 vehicles traveling west on Diablo Road and 13 vehicles traveling east on Blackhawk Road.
Of the 68 commute PM peak hour vehicles, 25 vehicles would exit the development on to Blackhawk Road with 16 vehicles traveling west along Diablo Road and 9 vehicles traveling east along Blackhawk Road. There would be a total of 43 vehicles coming into the Blackhawk Road project entry with 28 vehicles traveling east on Diablo Road and 15 vehicles traveling west on Blackhawk Road.