San Jose, CA Traffic and Road Conditions
San Jose Traffic Map
How to use the San Jose Traffic Map
Traffic flow lines: Red lines = Heavy traffic flow, Yellow/Orange lines = Medium flow and Green = normal traffic. Black lines or No traffic flow lines could indicate a closed road, but in most cases it means that either there is not enough vehicle flow to register or traffic isn't monitored. Also, If you do not see traffic flow, you can zoom in closer to reveal localized data. If you are unable to pan the map, press here (to focus off of the map) and try again.
Traffic Incidents (beta): Each dot represents a traffic event or incident such as road construction, closure or accident. At closer zoom levels, those dots can be pressed to see more info. Once a layer of traffic info layer has popped-up, be sure to press/click any additional arrows (e.g. 1 of 3) in the top right above the title to see other the details of the impact.
Impact Legend: 
Critical 
Major 
Minor 
Low
Traffic Alert
- Click or touch the map to move in different directions.
- If you do not see any markers on the map, try zooming in one or two levels using "+" on the top left side. However, they are not always available.
- Click an incident icon on the map to get more information.
San Jose Traffic Alerts
Caltrans District 4 on Twitter
511 SF Bay on Twitter
UPDATE: Residual Delays on Southbound I-880 South of 66TH Ave in Oakland. All Lanes Open. https://t.co/ITRwoLsl4h
Traffic Collision on Southbound I-880 South of 66TH Ave in Oakland. Center Lanes Blocked. https://t.co/ITRwoLsl4h
ONGOING : Disabled Tractor Trailer on Southbound I-680 North of Alcosta Blvd in San Ramon. Right Lanes Remain Block… https://t.co/HgIiQDAst0
UPDATE: Residual Delays on Southbound I-880 at CA-82 in San Jose. All Lanes Open.
Traffic Collision on Southbound I-880 at CA-82 in San Jose. Right Lanes Blocked. https://t.co/ITRwoLsl4h
Traffic Hazard on Southbound I-880 at CA-82 in San Jose. Right Lanes Blocked. https://t.co/ITRwoLsl4h
UPDATE: Residual Delays on Northbound US-101 Exiting at SFO Off-Ramp in Millbrae. Off-Ramp Open.
UPDATE: SF Muni N-Judah Line Resuming Regualr Service at Judah/15th, Due to Earlier Police Activty.
Traffic Collision on Northbound US-101 Exiting at SFO Off-Ramp in Millbrae. Left Lane Closed. https://t.co/ITRwoLsl4h
Caltrain Train 134 Is Delayed 23 Minutes at Hillsdale and Hayward Park Stations, Due to Single Tracking. https://t.co/ITRwoLsl4h
CA DOT | Caltrans QuickMap | CHP Traffic Full Site | CHP Traffic Mobile Site
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