Best Time to Drive from Diamond Bar to Carson

Right now (6:20 pm PDT): about 53 minutes via SR-91 West and SR-57 South, usually 46 at this time.

Only 42% of this drive is measured by working traffic sensors right now. The rest is estimated from nearby sensors, typical speeds and street traffic, so times can be off. Why so few sensors work.

Typical drive time by departure time

Minutes from Diamond Bar to Carson by day and time you leave (local time)
Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	36	40	48	49	45	42	41	42	41	43	47	46	47	44	38	37	36
Tue	37	46	59	58	52	47	46	45	44	44	49	51	51	48	40	37	37
Wed	37	45	58	58	52	48	46	46	44	45	50	52	55	51	41	38	37
Thu	37	45	55	56	52	46	46	45	46	46	50	52	53	49	40	38	37
Fri	37	44	52	50	49	46	45	45	46	50	51	53	54	50	42	38	37
Sat	37	38	38	38	39	40	42	43	45	45	46	47	47	45	41	38	37
Sun	37	37	37	37	38	39	39	40	41	42	42	41	40	39	39	39	37

About this drive

On weekdays the 41-mile drive from Diamond Bar to Carson (via SR-91 West and SR-57 South) usually takes as little as 36 minutes and up to 60 minutes, when leaving around 7:30 am on Wednesdays. The fastest times to leave are before 6 am or after 7:30 pm. Midday (11 am to 2 pm) it takes about 45 minutes. On weekends it is slowest around 4:30 pm on Saturdays (47 minutes).

About 40 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 1 mile surface streets (1 to 3 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Diamond Bar to central Carson along the route on the map. Starting or ending elsewhere in a big city can add or save several minutes.

Simulated from typical freeway speeds at each point of the drive for the time you would reach it, from every 5-minute reading we have recorded. We don't have sensors on surface streets yet, so the time on them is estimated from how congested the freeways around each end of the drive are at that time, in both directions: streets jam when the freeways do.

Questions

What is the best time to drive from Diamond Bar to Carson?

On weekdays, leave before 6 am or after 7:30 pm. The drive usually takes about 36 minutes then, versus up to 60 minutes at the worst times.

How long does it take to drive from Diamond Bar to Carson?

The 41-mile drive usually takes 36 to 60 minutes on weekdays, depending on when you leave, and about 45 minutes midday.

When is traffic worst from Diamond Bar to Carson?

Leaving around 7:30 am on Wednesdays is usually slowest, about 60 minutes.

Freeways on this drive

SR-91 West in Orange County (14 miles) · SR-91 West in Los Angeles (11 miles) · SR-57 South in Orange County (7 miles) · SR-57 South in Los Angeles (5 miles) · I-110 South in Los Angeles (1.7 miles) · SR-60 West in Los Angeles (1.4 miles)

Los Angeles traffic right now · Los Angeles traffic tomorrow

More drives

Carson to Diamond Bar (return trip) · Diamond Bar to Los Angeles · Diamond Bar to Long Beach · Diamond Bar to Anaheim · Diamond Bar to Riverside · Diamond Bar to Santa Ana · Diamond Bar to Irvine · Diamond Bar to San Bernardino · Diamond Bar to Fontana · Diamond Bar to Moreno Valley · Diamond Bar to Huntington Beach · Diamond Bar to Glendale

Open the live traffic map →

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	36	40	48	49	45	42	41	42	41	43	47	46	47	44	38	37	36
Tue	37	46	59	58	52	47	46	45	44	44	49	51	51	48	40	37	37
Wed	37	45	58	58	52	48	46	46	44	45	50	52	55	51	41	38	37
Thu	37	45	55	56	52	46	46	45	46	46	50	52	53	49	40	38	37
Fri	37	44	52	50	49	46	45	45	46	50	51	53	54	50	42	38	37
Sat	37	38	38	38	39	40	42	43	45	45	46	47	47	45	41	38	37
Sun	37	37	37	37	38	39	39	40	41	42	42	41	40	39	39	39	37

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	36	40	48	49	45	42	41	42	41	43	47	46	47	44	38	37	36
Tue	37	46	59	58	52	47	46	45	44	44	49	51	51	48	40	37	37
Wed	37	45	58	58	52	48	46	46	44	45	50	52	55	51	41	38	37
Thu	37	45	55	56	52	46	46	45	46	46	50	52	53	49	40	38	37
Fri	37	44	52	50	49	46	45	45	46	50	51	53	54	50	42	38	37
Sat	37	38	38	38	39	40	42	43	45	45	46	47	47	45	41	38	37
Sun	37	37	37	37	38	39	39	40	41	42	42	41	40	39	39	39	37

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	36	40	48	49	45	42	41	42	41	43	47	46	47	44	38	37	36
Tue	37	46	59	58	52	47	46	45	44	44	49	51	51	48	40	37	37
Wed	37	45	58	58	52	48	46	46	44	45	50	52	55	51	41	38	37
Thu	37	45	55	56	52	46	46	45	46	46	50	52	53	49	40	38	37
Fri	37	44	52	50	49	46	45	45	46	50	51	53	54	50	42	38	37
Sat	37	38	38	38	39	40	42	43	45	45	46	47	47	45	41	38	37
Sun	37	37	37	37	38	39	39	40	41	42	42	41	40	39	39	39	37