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 or no 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.
* In known extreme weather events or accidents, the map provider may still show green lines, even if lanes or the entire road is closed.
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

Caltrans Bay Area celebrated Clean CA Community Days through education and fun. A special thanks to D4 Director Din… https://t.co/eGDcNKQbJd

RT @CalVolunteers: Tune in today at 9:00 A.M. to learn more about #CleanCA Community Day in @CityofSanJose with Mayor @MattMahanSJ, Chief S…

As of 3:21 p.m. on Saturday, all lanes are open in both directions in San Jose near Tully Road.

#TRAFFICALERT: As of 3 p.m. on Saturday, US-101 northbound at Tully Road in San Jose is open. US-101 southbound is… https://t.co/lktBndPm88

RT @CountyofSonoma: Attention Sonoma County drivers: southbound Highway 101 will be closed at 9 p.m. Saturday in south Petaluma for 12 hour…

RT @CalVolunteers: What an amazing day!🌞 We were thrilled to see volunteers & service members come together for the #CleanCA event in @City…

Bay Area counties benefit as California invests $1.1 billion to continue rebuilding transportation infrastructure.… https://t.co/h20u9nLo3s

#TRAFFICALERT: Caltrans will close US-101 SB from Petaluma at State Route 116 (Lakeville Highway) to Atherton Road… https://t.co/TkOt4haCTA

Cleaner Streets. Healthier Communities! #CleanCASanJose @CaltransHQ @CAgovernor https://t.co/zqs20yDdaw

It's a beautiful ☀️day to make a change in our community! Caltrans Bay Area will be hosting a #CleanCA Community Da… https://t.co/JcDRcgniKO
511 SF Bay on Twitter

ONGOING: Multiple Road Closures Throughout the Bay Area. Please Visit https://t.co/e7AIyuifaN For More Information… https://t.co/VvL3Vc9nbv

REMINDER: Full Overnight Closure of Southbound US-101 between Lakeville St in Petaluma and San Marin Dr in Novato D… https://t.co/vkGsvSIhoq

UPDATE: Residual Delays on Southbound US-101 at Tully Rd in San Jose. All Lanes Open.

UPDATE: Residual Delays on Southbound CA-17 South of Bear Creek Rd in Los Gatos. All Lanes Open.

UPDATE: Police Department Activity on Southbound US-101 at Tully Rd in San Jose. All Northbound Lanes Now Open. All… https://t.co/a40U8of351

Police Department Activity on Northbound and Southbound US-101 at Tully Rd in San Jose. All Lanes Closed. https://t.co/ITRwoLKuip

ONGOING: Emergency Road Closure on CA-9 North of CA-236 in Santa Cruz County. One-Way Traffic Control Remains in Ef… https://t.co/ktPll1xk7D

ONGOING: Emergency Roadwork on Eastbound I -580 East of N Flynn Rd in Livermore. Right Lane Remains Blocked. https://t.co/ITRwoLKuip

ONGOING: Multiple Road Closures Throughout the Bay Area. Please Visit https://t.co/e7AIyuifaN For More Information… https://t.co/pk2iNpNjPt

Traffic Collision With Injuries on Southbound CA-17 South of Bear Creek Rd in Los Gatos. All Lanes Blocked. https://t.co/ITRwoLKuip
CA DOT | Caltrans QuickMap | CHP Traffic Full Site | CHP Traffic Mobile Site
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