Friday
The best time to drive the M40 on a Friday
On a Friday the M40 is quietest at 20:00, averaging 59 mph, and busiest at 14:00, averaging 54 mph. Measured from National Highways roadside sensors between 1 May 2026 and 15 June 2026, not estimated.
- Measured, not estimated
- 1 May 2026 to 15 June 2026
Every hour of a Friday
Darker means slower- 00:0055mph7% below normal
- 01:0054mph8% below normal
- 02:0054mph8% below normal
- 03:0054mph8% below normal
- 04:0055mph6% below normal
- 05:0057mphnormal speed
- 06:0058mphnormal speed
- 07:0057mph3% below normal
- 08:0057mph4% below normal
- 09:0056mph5% below normal
- 10:0055mph7% below normal
- 11:0055mph8% below normal
- 12:0055mph8% below normal
- 13:0054mph9% below normal
- 14:0054mph9% below normal
- 15:0054mph8% below normal
- 16:0055mph7% below normal
- 17:0055mph7% below normal
- 18:0056mph6% below normal
- 19:0058mphnormal speed
- 20:0059mphnormal speed
- 21:0058mphnormal speed
- 22:0057mph4% below normal
- 23:0056mph5% below normal
Across the day that is roughly 2 percentage points further below free-flowing than the M40's average day, so Friday is one of the harder days to travel on this road. Hours outside 06:00 to 22:00 are shown but greyed: the small hours are the fastest on almost every road in England, which is true and useless for planning. Averaged across 16 sensors on the M40.
Minutes you save on a Friday
Quietest against busiest hour59 mph51 min
54 mph56 min
5 minsaved on a 50-mile trip
Other trip lengths: 10 miles saves 1 min, 25 miles saves 2 min. Worked out from the average speed along the whole M40 at each hour, so a trip through its worst junction at rush hour loses more than this.
Questions about the M40 on a Friday
What is the best time to drive the M40 on a Friday?
On a Friday the quietest hour on the M40 is 20:00, when traffic averages 59 mph. That is a measured average from National Highways roadside sensors on the road itself, recorded between 1 May 2026 and 15 June 2026, rather than an estimate. Only 06:00 to 22:00 is considered, because the small hours are the fastest on almost every road in England and saying so helps nobody plan a journey. Roadworks, collisions and weather are not in the average, so it describes what this Friday usually looks like rather than what today will look like.
What time is the M40 busiest on a Friday?
The busiest hour on the M40 on a Friday is 14:00, averaging 54 mph, about 9% below the speed the road runs at when it is clear. The comparison is against this road's own free-flowing speed, so "slower" means slower than the M40 normally manages rather than slower than some national figure. Measured from roadside sensors between 1 May 2026 and 15 June 2026. It is an archive of the usual pattern, not a live reading, so check conditions before you set off.