US-101 South Traffic in Bay Area

As of 11:00 am PDT, US-101 South in the San Francisco Bay Area is averaging 63 mph across 256 sensors, about normal for this time. The slowest stretch is near 4a5334 Loc 28 at 32 mph (usually 58 mph).

Open the live map of US-101 South →

Incidents on US-101 South right now

• Fatality: Us101 S / Tully Rd W Ofr
• Traffic Hazard: Us101 S / Story Rd Ofr

Is US-101 South moving right now?

Slow stretches as of 11:00 am PDT, and why:

• Near 4a5334 Loc 28: 32 mph, likely heavier traffic than usual for this time (usually 58 mph).
• Near Cochrane Rd Rm-s-diag: 39 mph, likely the usual rush-hour slowdown here (usually 33 mph at this time).

Earlier in the last 24 hours

• 9:25 am: Traffic Hazard, Us101 S / I580 E
• 8:55 am: Traffic Hazard, Us101 S / Bayshore Blvd Ofr
• 8:15 am: Traffic Hazard, US101 S / E CAPITOL EXPY OFR
• 7:40 am: Traffic Hazard, Us101 S / Lucas Valley Rd Onr
• 7:15 am: Trfc Collision-No Inj, Us101 S / Tully Rd E Onr
• 6:25 am: Traffic Hazard, Us101 S / Blossom Hill Rd E Onr
• 5:35 am: Traffic Hazard, Us101 S / Yerba Buena Rd Ofr
• 11:20 pm: Trfc Collision-No Inj, Us101 S / I80 W

Best time to drive US-101 South

Traffic is usually worst on Thursday around 4 pm (about 51 mph). On weekdays the morning slowdown peaks around 8 am (54 mph on Tuesdays) and the evening slowdown around 4 pm (51 mph on Thursdays). Midday (10 am to 2 pm) averages 60 mph. On weekends it is slowest on Saturdays around 12 pm (60 mph).

Averages of every 5-minute reading we have recorded at this time of the week. Colors match the live map.

Questions

Why is US-101 South slow right now?

Near 4a5334 Loc 28: 32 mph, likely heavier traffic than usual for this time (usually 58 mph). Near Cochrane Rd Rm-s-diag: 39 mph, likely the usual rush-hour slowdown here (usually 33 mph at this time).

When is traffic worst on US-101 South in Bay Area?

Traffic on US-101 South is usually worst on Thursday around 4 pm (about 51 mph).

What is the best time to drive US-101 South in Bay Area?

On weekdays, avoid around 8 am (54 mph on Tuesdays) and around 4 pm (51 mph on Thursdays). Midday (10 am to 2 pm) averages 60 mph, and early mornings and late evenings are fastest.

Is US-101 South busy right now?

As of 11:00 am PDT, US-101 South in the San Francisco Bay Area is averaging 63 mph across 256 sensors, about normal for this time. The slowest stretch is near 4a5334 Loc 28 at 32 mph (usually 58 mph).

Drives that use US-101 South

Best times to leave for these trips, from typical traffic on US-101 South and the roads around it:

San Francisco to San Jose · San Francisco to SJC · San Francisco to Santa Clara · San Francisco to Mountain View · SFO to San Jose · SFO to SJC · San Francisco to Palo Alto · SFO to Santa Clara · San Mateo to San Jose · San Mateo to SJC

Plan ahead: Bay Area traffic tomorrow · Christmas traffic · Fourth Of July traffic · Labor Day traffic · Memorial Day traffic · Is Bay Area traffic getting worse? · Traffic estimator

Other freeways in Bay Area

SR-1 North · SR-1 South · SR-4 East · SR-4 West · I-5 North · I-5 South · SR-12 East · SR-12 West · SR-17 North · SR-17 South · SR-24 East · SR-24 West · SR-25 North · SR-25 South · SR-29 South · SR-37 East · SR-37 West · I-80 East · I-80 West · SR-84 North · SR-84 South · SR-85 North · SR-85 South · SR-87 North · SR-87 South · SR-92 East · SR-92 West · SR-99 North · SR-99 South · US-101 North · SR-120 East · SR-120 West · SR-132 East · SR-132 West · I-205 East · I-205 West · SR-237 East · SR-237 West · I-238 North · I-238 South · SR-242 North · SR-242 South · I-280 North · I-280 South · I-580 East · I-580 West · I-680 North · I-680 South · I-880 North · I-880 South · I-980 East · I-980 West