Is there a good Android app that provides official traffic updates and road closure information for California highways?

QuickMap is an official Android application from the California Department of Transportation (CalTrans) designed to provide comprehensive traffic and transportation updates for California's roadways. It excels in delivering real-time information on highway closures, construction zones, and ferry schedules, making it a valuable resource for daily commuters and travelers. The app features interactive maps that display current traffic congestion, incidents, and official alerts sourced directly from CalTrans, allowing users to anticipate delays and adjust routes accordingly. In practical use, such as during morning rush hours or unexpected roadwork, QuickMap helps drivers navigate around bottlenecks with updated alternative paths. Reviews indicate that users find it accurate about 95% of the time, with many relying on it for ferry closure notifications and highway conditions. However, some feedback points to occasional gaps, like onramp closures not being shown, which can lead to last-minute detours. Despite this minor imperfection, the app remains a dependable tool for accessing authoritative traffic data. Its straightforward interface includes filters for specific alert types and areas, catering to those planning trips or managing daily drives. For anyone needing reliable, California-focused traffic insights, QuickMap offers a focused solution that balances timely information with official credibility.