Best Time to Drive from Carson to Diamond Bar

Right now (6:20 pm PDT): about 71 minutes via SR-60 East and I-605 North and SR-91 East, usually 61 at this time.

Only 15% 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 Carson to Diamond Bar 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	35	38	45	49	47	46	48	47	49	59	69	75	74	60	45	38	36
Tue	36	40	50	57	52	47	49	50	52	63	77	89	93	71	50	40	36
Wed	35	40	49	55	51	48	47	48	50	60	78	88	85	69	51	42	37
Thu	35	40	46	52	50	49	49	50	53	62	76	84	85	64	48	42	37
Fri	36	39	47	48	47	48	51	52	56	68	81	77	71	59	49	43	37
Sat	36	36	37	38	39	40	41	41	43	46	48	49	48	45	41	39	37
Sun	37	36	36	37	37	37	38	40	40	40	39	39	39	39	40	39	36

About this drive

On weekdays the 41-mile drive from Carson to Diamond Bar (via SR-60 East and I-605 North and SR-91 East) usually takes as little as 35 minutes and up to 93 minutes, when leaving around 4:30 pm on Tuesdays. The fastest times to leave are before 6 am or after 8:30 pm. Midday (11 am to 2 pm) it takes about 53 minutes. On weekends it is slowest around 3:30 pm on Saturdays (49 minutes).

About 40 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 0.6 miles surface streets (1 to 2 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Carson to central Diamond Bar 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 Carson to Diamond Bar?

On weekdays, leave before 6 am or after 8:30 pm. The drive usually takes about 35 minutes then, versus up to 93 minutes at the worst times.

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

The 41-mile drive usually takes 35 to 93 minutes on weekdays, depending on when you leave, and about 53 minutes midday.

When is traffic worst from Carson to Diamond Bar?

Leaving around 4:30 pm on Tuesdays is usually slowest, about 93 minutes.

Freeways on this drive

SR-60 East in Los Angeles (14 miles) · SR-91 East in Los Angeles (10 miles) · I-605 North in Los Angeles (7 miles) · I-605 North in Orange County (6 miles) · I-110 North in Los Angeles (3 miles)

Los Angeles traffic right now · Los Angeles traffic tomorrow

More drives

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

Open the live traffic map →

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	35	38	45	49	47	46	48	47	49	59	69	75	74	60	45	38	36
Tue	36	40	50	57	52	47	49	50	52	63	77	89	93	71	50	40	36
Wed	35	40	49	55	51	48	47	48	50	60	78	88	85	69	51	42	37
Thu	35	40	46	52	50	49	49	50	53	62	76	84	85	64	48	42	37
Fri	36	39	47	48	47	48	51	52	56	68	81	77	71	59	49	43	37
Sat	36	36	37	38	39	40	41	41	43	46	48	49	48	45	41	39	37
Sun	37	36	36	37	37	37	38	40	40	40	39	39	39	39	40	39	36

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	35	38	45	49	47	46	48	47	49	59	69	75	74	60	45	38	36
Tue	36	40	50	57	52	47	49	50	52	63	77	89	93	71	50	40	36
Wed	35	40	49	55	51	48	47	48	50	60	78	88	85	69	51	42	37
Thu	35	40	46	52	50	49	49	50	53	62	76	84	85	64	48	42	37
Fri	36	39	47	48	47	48	51	52	56	68	81	77	71	59	49	43	37
Sat	36	36	37	38	39	40	41	41	43	46	48	49	48	45	41	39	37
Sun	37	36	36	37	37	37	38	40	40	40	39	39	39	39	40	39	36

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	35	38	45	49	47	46	48	47	49	59	69	75	74	60	45	38	36
Tue	36	40	50	57	52	47	49	50	52	63	77	89	93	71	50	40	36
Wed	35	40	49	55	51	48	47	48	50	60	78	88	85	69	51	42	37
Thu	35	40	46	52	50	49	49	50	53	62	76	84	85	64	48	42	37
Fri	36	39	47	48	47	48	51	52	56	68	81	77	71	59	49	43	37
Sat	36	36	37	38	39	40	41	41	43	46	48	49	48	45	41	39	37
Sun	37	36	36	37	37	37	38	40	40	40	39	39	39	39	40	39	36