Motorway traffic near Three Rivers

GOWeekdays 20:00Quietest weekday daytime hour, about 2% below normal speed

AVOIDWeekdays 17:00Slowest weekday hour, around 44 mph

Near Three Rivers, the motorways are usually quietest on a weekday at 20:00 and slowest at 17:00, about 27% below their normal speed. Measured by 7 National Highways roadside sensors in the Three Rivers council area between 1 May 2026 and 15 June 2026, not estimated.

Roads through Three Rivers

Weekday averages from the sensors in this area only

Road	Junctions measured	Quietest weekday hour	Slowest weekday hour
M25 7 sensors	J17 (Maple Cross), J18 (Chorleywood), J19 (Chandlers Cross), J20 (Kings Langley), J21 (Chiswell)	20:00, 2% below	17:00, 27% below (44 mph)

These are the stretches inside Three Rivers, which can differ from the whole road. Each weekday hour is averaged over Monday to Friday first, so one bad day cannot decide it. Junctions are the nearest to each sensor, from OpenStreetMap.

The whole week near Three Rivers

Darker means slower

Average speed on the Three Rivers for each hour of the week, shaded by how far below normal it runs.
Day	00	1	2	3	4	5	06	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23
Mon	Mon 00:00, 61 mph, 0% below normal	Mon 01:00, 60 mph, 1% below normal	Mon 02:00, 60 mph, 1% below normal	Mon 03:00, 61 mph, 1% below normal	Mon 04:00, 60 mph, 2% below normal	Mon 05:00, 60 mph, 2% below normal	Mon 06:00, 54 mph, 12% below normal	Mon 07:00, 48 mph, 20% below normal	Mon 08:00, 51 mph, 16% below normal	Mon 09:00, 52 mph, 15% below normal	Mon 10:00, 52 mph, 14% below normal	Mon 11:00, 53 mph, 13% below normal	Mon 12:00, 54 mph, 12% below normal	Mon 13:00, 55 mph, 9% below normal	Mon 14:00, 56 mph, 8% below normal	Mon 15:00, 55 mph, 9% below normal	Mon 16:00, 53 mph, 13% below normal	Mon 17:00, 52 mph, 14% below normal	Mon 18:00, 56 mph, 8% below normal	Mon 19:00, 59 mph, 3% below normal	Mon 20:00, 59 mph, 2% below normal	Mon 21:00, 60 mph, 2% below normal	Mon 22:00, 58 mph, 4% below normal	Mon 23:00, 59 mph, 4% below normal
Tue	Tue 00:00, 58 mph, 5% below normal	Tue 01:00, 58 mph, 5% below normal	Tue 02:00, 57 mph, 6% below normal	Tue 03:00, 58 mph, 4% below normal	Tue 04:00, 59 mph, 3% below normal	Tue 05:00, 59 mph, 3% below normal	Tue 06:00, 50 mph, 17% below normal	Tue 07:00, 42 mph, 30% below normal	Tue 08:00, 40 mph, 33% below normal	Tue 09:00, 46 mph, 24% below normal	Tue 10:00, 49 mph, 19% below normal	Tue 11:00, 54 mph, 12% below normal	Tue 12:00, 55 mph, 10% below normal	Tue 13:00, 56 mph, 8% below normal	Tue 14:00, 55 mph, 10% below normal	Tue 15:00, 53 mph, 13% below normal	Tue 16:00, 45 mph, 25% below normal	Tue 17:00, 44 mph, 28% below normal	Tue 18:00, 51 mph, 16% below normal	Tue 19:00, 59 mph, 3% below normal	Tue 20:00, 60 mph, 1% below normal	Tue 21:00, 59 mph, 2% below normal	Tue 22:00, 58 mph, 4% below normal	Tue 23:00, 59 mph, 4% below normal
Wed	Wed 00:00, 57 mph, 6% below normal	Wed 01:00, 58 mph, 5% below normal	Wed 02:00, 58 mph, 4% below normal	Wed 03:00, 59 mph, 3% below normal	Wed 04:00, 59 mph, 3% below normal	Wed 05:00, 60 mph, 2% below normal	Wed 06:00, 50 mph, 17% below normal	Wed 07:00, 44 mph, 26% below normal	Wed 08:00, 46 mph, 24% below normal	Wed 09:00, 51 mph, 16% below normal	Wed 10:00, 53 mph, 12% below normal	Wed 11:00, 53 mph, 12% below normal	Wed 12:00, 53 mph, 12% below normal	Wed 13:00, 52 mph, 15% below normal	Wed 14:00, 50 mph, 17% below normal	Wed 15:00, 49 mph, 19% below normal	Wed 16:00, 43 mph, 28% below normal	Wed 17:00, 41 mph, 33% below normal	Wed 18:00, 48 mph, 20% below normal	Wed 19:00, 58 mph, 5% below normal	Wed 20:00, 60 mph, 2% below normal	Wed 21:00, 60 mph, 2% below normal	Wed 22:00, 59 mph, 4% below normal	Wed 23:00, 58 mph, 4% below normal
Thu	Thu 00:00, 58 mph, 5% below normal	Thu 01:00, 56 mph, 9% below normal	Thu 02:00, 56 mph, 8% below normal	Thu 03:00, 57 mph, 6% below normal	Thu 04:00, 58 mph, 5% below normal	Thu 05:00, 59 mph, 2% below normal	Thu 06:00, 52 mph, 15% below normal	Thu 07:00, 45 mph, 26% below normal	Thu 08:00, 47 mph, 22% below normal	Thu 09:00, 52 mph, 14% below normal	Thu 10:00, 53 mph, 12% below normal	Thu 11:00, 53 mph, 13% below normal	Thu 12:00, 53 mph, 12% below normal	Thu 13:00, 53 mph, 13% below normal	Thu 14:00, 52 mph, 14% below normal	Thu 15:00, 50 mph, 18% below normal	Thu 16:00, 45 mph, 27% below normal	Thu 17:00, 42 mph, 30% below normal	Thu 18:00, 49 mph, 20% below normal	Thu 19:00, 58 mph, 5% below normal	Thu 20:00, 60 mph, 2% below normal	Thu 21:00, 60 mph, 2% below normal	Thu 22:00, 59 mph, 3% below normal	Thu 23:00, 58 mph, 5% below normal
Fri	Fri 00:00, 57 mph, 6% below normal	Fri 01:00, 57 mph, 6% below normal	Fri 02:00, 58 mph, 5% below normal	Fri 03:00, 59 mph, 3% below normal	Fri 04:00, 59 mph, 4% below normal	Fri 05:00, 60 mph, 1% below normal	Fri 06:00, 54 mph, 11% below normal	Fri 07:00, 51 mph, 16% below normal	Fri 08:00, 52 mph, 15% below normal	Fri 09:00, 53 mph, 13% below normal	Fri 10:00, 51 mph, 15% below normal	Fri 11:00, 50 mph, 18% below normal	Fri 12:00, 48 mph, 20% below normal	Fri 13:00, 47 mph, 22% below normal	Fri 14:00, 46 mph, 23% below normal	Fri 15:00, 45 mph, 25% below normal	Fri 16:00, 43 mph, 29% below normal	Fri 17:00, 43 mph, 28% below normal	Fri 18:00, 47 mph, 22% below normal	Fri 19:00, 57 mph, 6% below normal	Fri 20:00, 60 mph, 2% below normal	Fri 21:00, 60 mph, 2% below normal	Fri 22:00, 60 mph, 1% below normal	Fri 23:00, 59 mph, 3% below normal
Sat	Sat 00:00, 57 mph, 6% below normal	Sat 01:00, 58 mph, 5% below normal	Sat 02:00, 58 mph, 4% below normal	Sat 03:00, 59 mph, 3% below normal	Sat 04:00, 60 mph, 1% below normal	Sat 05:00, 61 mph, 0% below normal	Sat 06:00, 61 mph, -1% below normal	Sat 07:00, 61 mph, 1% below normal	Sat 08:00, 60 mph, 2% below normal	Sat 09:00, 56 mph, 8% below normal	Sat 10:00, 52 mph, 13% below normal	Sat 11:00, 51 mph, 16% below normal	Sat 12:00, 51 mph, 16% below normal	Sat 13:00, 53 mph, 13% below normal	Sat 14:00, 54 mph, 11% below normal	Sat 15:00, 55 mph, 9% below normal	Sat 16:00, 57 mph, 7% below normal	Sat 17:00, 56 mph, 8% below normal	Sat 18:00, 57 mph, 6% below normal	Sat 19:00, 59 mph, 2% below normal	Sat 20:00, 61 mph, 0% below normal	Sat 21:00, 61 mph, 0% below normal	Sat 22:00, 60 mph, 1% below normal	Sat 23:00, 60 mph, 1% below normal
Sun	Sun 00:00, 61 mph, 0% below normal	Sun 01:00, 61 mph, 0% below normal	Sun 02:00, 61 mph, 0% below normal	Sun 03:00, 61 mph, 0% below normal	Sun 04:00, 62 mph, -2% below normal	Sun 05:00, 61 mph, -1% below normal	Sun 06:00, 62 mph, -2% below normal	Sun 07:00, 62 mph, -1% below normal	Sun 08:00, 61 mph, 0% below normal	Sun 09:00, 60 mph, 2% below normal	Sun 10:00, 58 mph, 4% below normal	Sun 11:00, 58 mph, 6% below normal	Sun 12:00, 56 mph, 7% below normal	Sun 13:00, 56 mph, 7% below normal	Sun 14:00, 58 mph, 5% below normal	Sun 15:00, 57 mph, 6% below normal	Sun 16:00, 57 mph, 6% below normal	Sun 17:00, 58 mph, 5% below normal	Sun 18:00, 58 mph, 4% below normal	Sun 19:00, 59 mph, 3% below normal	Sun 20:00, 60 mph, 1% below normal	Sun 21:00, 60 mph, 1% below normal	Sun 22:00, 61 mph, 0% below normal	Sun 23:00, 61 mph, 0% below normal

FasterSlower

Rush hour near Three Rivers

Weekdays, all sensors in the area

MORNING RUSH HOUR

07:00 to 09:00

Worst at 07:00, about 24% below normal speed on a weekday

EVENING RUSH HOUR

16:00 to 18:00

Worst at 17:00, about 27% below normal speed on a weekday

The slowest spot in the area is on the M25 anti-clockwise, about 500 m from junction 20, Kings Langley, in Three Rivers: 59% below normal at 17:00 on an average weekday, about 26 mph. The slowest spots in England.

Closures near Three Rivers

Within 5 km of our sensors, checked 3:19pm today, UK time

Nothing was confirmed closed within 5 km of our sensors at our last check. This covers planned roadworks and lane closures on National Highways roads, not accidents or council roads.

For live conditions use Traffic England; for council and utility roadworks, see one.network. More traffic resources.

How many vehicles pass Three Rivers

Department for Transport counts, 2025

Road	Stretch	Vehicles a day	Lorries
M25	J17 to J18	179,000	8%
M25	J18 to J19	170,000	8%
M25	J20 to J21	168,000	9%
M25	near J17	164,000	13%
M25	J19 to J20	146,000	9%
M25	near J19	25,500	4%

Both directions added together, averaged over 2025, for count points within 2 km of our sensors. From the Department for Transport’s road traffic statistics (Open Government Licence v3.0).

Nearby on the same roads

Questions about traffic near Three Rivers

What is the best time to drive near Three Rivers?

On a weekday, the motorways near Three Rivers are usually quietest at 20:00 and slowest at 17:00, when they run about 27% below normal speed (around 44 mph). Measured by 7 National Highways roadside sensors in Three Rivers between 1 May 2026 and 15 June 2026, not estimated.

When is rush hour near Three Rivers?

On weekdays the morning rush near Three Rivers is 07:00 to 09:00, worst at 07:00, and the evening rush is 16:00 to 18:00, worst at 17:00.

Are there roadworks near Three Rivers?

Nothing was confirmed closed within 5 km of our sensors in Three Rivers at our last check (3:19pm today, UK time). This covers planned roadworks and lane closures on National Highways roads, not accidents or council roads.

Three Rivers here means the council area our sensors fall in (from postcodes.io), not just the town centre. Typical patterns from the sensor archive, not live traffic. Powered by National Highways’ Transport Data Feeds.