Air carrier Captain reported receiving an RA while descending over VNY airport on approach to BUR. Flight crew complied with the RA and continued the approach.

Narrative

On a visual approach into BUR; we received a climb RA from Van Nuys traffic. We were cleared for approach and already cleared to land Runway 8. The autopilot was on; and the Localizer and glideslope was captured for the approach. I had configured the aircraft gear down and Flaps 15 prior to BUDDE intersection. The FO mentioned he had some traffic in sight; and we had it on TCAS as well. I clicked off the autopilot to slow my descent rate to avoid the Traffic Advisory; but it wasn't quick enough. Soon after; the climb RA occurred. I complied with the RA while the FO maintained a visual on the aircraft. Once we were clear of the conflict; I called Flaps 30 and assessed the position of the aircraft. The FO notified the Tower of the RA; and we discussed continuing the approach. We were one dot high on the glideslope and at landing gear down and Flaps 30 we were in position to continue the approach. I called Flaps to 40 and we were stable well prior to the 1;000 ft. call. We landed with no further conflicts or issues. Suggestions: The general aviation traffic is a mess in California. BUR; SNA; and LGB are repeat offenders when it comes to conflicting traffic. Every time I come in these airports; I put in my brief about paying attention to the GA aircraft. In this case we talked about it and had the traffic insight the whole time and it still created a conflict. The congestion is something we will continue to deal with. As a Crew Member I will remain vigilant and share my stories of caution with anyone who will listen.