Exhibit 4-3_55A_BRISTOL WIDENING TRAFFIC STUDY

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1 DKS Associates f I 8. Mitigation Measures Specific Plan The study agrees with all the recommendations made in the EIS in regard to Bristol Street. The intersection capacity analysis does not warrant any mitigation measures as all intersections have a satisfactory level of service. Some of the mitigation highlights recommended in the EIS report are as follows: the construction of raised median islands on Bristol Street is recommended as a mitigation measure. It will eliminate left -turn movements at midblock locations and concentrate left and U -turn movements at signalized intersections. A reduction in accident frequency can also be expected through the use of raised median islands. The continuous raised median island may, however, alter circulation patterns and access to residential and commercial developments along Bristol Street. At minor streets where median islands will be constructed, turning movements will be restricted to right in and right out maneuvers. Thus, the traffic circulation pattern might be altered and traffic may be directed to other available routes. However, the negative effect of this additional travel length would be offset by the reduction in conflict potential at a full intersection with Bristol Street_ Signal coordination should be provided along Bristol Street from Warner Avenue to Memory Lane to improve traffic progression. Parking should be prohibited along both sides of Bristol Street from Warner Avenue to Memory Lane. The prohibition of parking will improve traffic operation and capacity of Bristol Street by eliminating the potential conflicts between parking and unparking maneuvers with through traffic. It will also enhance traffic safety along Bristol Street through the reduction of accident potential. Parking prohibition will also improve sight distance availability at the intersections or adjacent driveways, thus, reducing accident potential at these locations. In addition, bus turnouts along Bristol Street should be provided_ Bus turnouts would not impede through traffic lanes while loading and unloading passengers. This would further enhance the capacity of the roadway as there are no bus stops on each side of Bristol Street in the study area. The bus turnouts are most critical at major intersections such as First Street, McFadden Avenue, Edinger Avenue, Warner Avenue and Santa Ana Boulevard. 8.1 PROPOSED BUS TURNOUT LOCATIONS In order to maintain unrestricted traffic flow along the corridor, several bus turnout locations are proposed. In addition to proposing new far side bus turnouts within the Bristol Street W657.P90223x0 Rpt 40