From LADOT project site 

On Saturday July 29th, the Los Angeles Department of Transportation (LADOT) will be implementing a new traffic pattern at the intersection of Culver and Vista Del Mar. The traffic signal will be modified to ease congestion and provide smoother traffic flow. To accommodate these changes, some drivers will access their destinations in a new way.  Northbound Vista Del Mar at Culver Boulevard will be restricted to right-turns only. Due to this signal modification, northbound vehicles that previously went through or turned left at the intersection will have two other ways of reaching their destination. The above diagram shows the two distinct ways northbound Vista Del Mar vehicles will have to access the north and west side of the intersection.

Drivers on northbound Vista Del Mar will have a new left turn lane before the intersection to access Pacific Avenue into Playa del Rey for local destinations.  Those heading to eastbound Culver Boulevard should proceed to the intersection where all traffic will be required to turn right.

Residents and visitors to “the Hill” will now have a separate left-turn arrow from westbound Culver Boulevard.  They will access Vista Del Mar Lane from the leftmost turn lane.  Through traffic to Vista Del Mar will stay in the right lane as they approach the intersection.

New striping and bollards will be installed to guide drivers through the intersection. For the first few days, traffic officers will be stationed at the intersection during the busiest times to help motorists with the transition.

In the new configuration, drivers traveling between Culver Boulevard and Vista Del Mar will be able to proceed through the intersection together, allowing the two busiest movements to proceed simultaneously.  This efficiency is expected to significantly improve traffic flow and reduce waiting times for everyone passing through the intersection, whether on foot, by bicycle, or by car.

LADOT staff will be monitoring the new operation and adjusting signal timing as needed throughout the coming weeks.

Construction will take place on Friday, July 28th between 9 AM and 3 PM and Saturday, July 29th between 7 AM and approximately 5 PM.  Crews will make every effort to minimize construction-related delays, but at times lanes will need to be closed temporarily to accommodate implementation.

Thank you for your patience as we work to make improvements in Playa del Rey.  We welcome your feedback on the new operation.  Please submit any comments or concerns by e-mail to ladot.playadelrey@lacity.org.