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BACKGROUND In 2016, a resident of Riddell Street contacted City staff to voice their concern regarding the high traffic volume along Riddell Street during the AM commute period. Staff collected traffic counts along Riddell Street, and the count data confirmed that the volumes are much higher than expected in the AM peak period. DISCUSSION Twenty five homes are located along Riddell Street and four homes are located along Happy Valley Road adjacent to Riddell Street. The average number of trips per household during the AM peak hour on a weekday is 0.75, and the expected AM hourly volume along Riddell Street should be about 22 vehicles. Based on the traffic data collected, the average number of vehicles along Riddell Street during the AM peak hours range from 100 to 300 vehicles, depending on the level of congestion on 1-680 and the Sunol Boulevard southbound on ramp. The additional trips are cut-through traffic that uses Riddell Street to avoid the congestion at the 680/Sunol Boulevard interchange (most of the cut-through uses Riddell then makes a right on Happy Valley, and then another right on Sunol to get back to the 1-680 interchange where they can make a left turn onto the loop ramp). To eliminate the cut-through traffic during the AM peak commute period, the residents and City staff recommend a left turn restriction from westbound Sunol Boulevard to southbound Riddell Street. There was sufficient neighborhood interest to pursue the AM peak period left turn restriction (6 - 9 AM), and the residents collected the required petition signatures to show that the majority of the neighborhood (75%) supports the left turn restriction. --- rrp„ �__ Riddell Street Traffic .Left Tarn Raulr,ctIon 6-9 AM Monday :,,,Calming Plan tnrougn Fneay 1►' sd .! \:__ .`•47. s i \ '''*'S , r v eo ab ,r 4,' k r1t V , \...... 1 Page 2 of 3 l