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East Stockton Transfer and Recycling Station Modification Traffic Assessment September 19, 2011 Page 3 1 During the p.m. peak hour, the northbound through movement was observed to spillback to the westbound SR 4 ramps about 30% of the time. All other movements appeared to operate ' with minimal queues during this time frame. It was observed that eastbound to southbound trucks, and specifically, the transfer trucks make a right turn by first moving the vehicle to the centerline of Weber Street as they approach the Filbert Street intersection. The limit line along the west side of the intersection is set back about 25 feet from the intersection to allow inbound (i.e. northbound to westbound truck traffic) to complete the movement without being blocked by outbound trucks. The outbound trucks align the left side of the vehicle along the centerline line and then complete the turn without overtopping the curb in the southwest quadrant of the intersection. Filbert Street/ SR 4 WB ramps - During the a.m. peak period the southbound to westbound right turn movement was noted to be a frequent movement as many vehicles were observed turning from Myrtle Street onto Filbert Street and then making this turn to enter westbound SR 4. Vehicles were observed queued to the Weber Street intersection, with spillback occurring through the Weber Street intersection. While not project related it was observed that northbound to westbound traffic along Filbert Street was observed to queue to the eastbound SR 4 ramps intersection about 75%of the time during the a.m.peak hour. Vehicle spillback was noted to the eastbound ramps intersection. ' No queuing issues were noted during the p.m. peak hour. During both peak hours traffic along the westbound off-ramp was minimal with no queuing ' issues observed. Filbert Street/ SR 4 EB ramps - There is about 200' of queuing available for this southbound to eastbound movement onto eastbound SR 4. The left turn lane along southbound Filbert Street provided adequate queuing without spillback beyond the westbound ramps intersection. While not project related northbound traffic was observed queuing through the intersection as L a result of the spillback encountered from the northbound to westbound movement at the SR 4 westbound ramps intersection. During the a.m. peak hour a long queue was observed along the eastbound off-ramp. The queue, consisting of mostly passenger cars, but also including buses, extended almost the entire length of the off-ramp, about 900'. No trucks were observed in these queues. This movement was examined again late in the peak hour, and it was observed that the queue had dissipated. During the p.m. peak hour this movement had queues of up to 15 vehicles abut 25%of the time; in all case, though the queue dissipated each signal cycle. Y