M25 Junction 17: Maple Cross (A412)
Junction 17 at Maple Cross links the M25 to the A412 for Rickmansworth, about a mile and a half east. Heronsgate, Mill End and Maple Cross are beside it. The Chiltern Open Air Museum is about a mile and a half west. Junction 18 is under a mile and a half north.
Rickmansworth and Maple Cross residents, couriers working the trading estates and visitors to the Chiltern Open Air Museum join the M25 here.
Check this junction now: live M25 speed flow map · latest M25 traffic news · M25 serious incidents · M25 accidents
M25 Junction 17 Now: Accidents, Incidents and Roadworks
Live traffic news at M25 Junction 17
Incidents and roadworks between Junction 16 and Junction 18 that we are aware of.
M1 northbound Jct 6 to Jct 8 carriageway closure
21:28 (9:28pm)21 Oct 2026reported 19 min ago
- Location
- link road from M25 J21 clockwise to M1 J6A northbound
- Direction
- Clockwise
- Lanes closed
- Carriageway closed
- Reason
- Roadworks
- Schedule
- 22:00 (10pm) Wed 21 Oct 2026 → 05:00 (5am) Thu 22 Oct 2026
Forecast - not confirmed
+ 2 more near Junction 17 - see all the M25 traffic news →
This is the news for Junction 17 only, not the whole M25. For the rest of the motorway see all the latest M25 traffic news, the overhead signs and the speed limits in force now.
Updated 21:47 (9:47pm) Wed 21 Oct 2026
Live Traffic Speeds at M25 Junction 17
The speed strip below shows the M25 around this junction, both directions, from National Highways’ live data, checked every five minutes.
Untick all three to see just the speeds. We show the important overhead signs and the mandatory speed limits (red ring); see every overhead sign.
Go to our live M25 traffic speed flow map ›
NOTE: The speed flow, overhead sign messages or other information shown on our live traffic speed flow map is updated every few minutes. We cross check the data and aim to provide warnings if there could be a delay or an inaccurate speed reading. There can be occasions, beyond our control, and despite our best efforts where the speed flow could be inaccurate. We cannot therefore guarantee the speed you can expect on any stretch of the motorway is always accurately shown. However we hope you will find our live traffic speed flow map a useful tool in trying to plan your journey. Safe driving.
All the latest M25 traffic news →Live M25 traffic speed flow map →
M25 J17 in Our Records
More than half of the incidents we recorded at J17 were collisions (3 of 5). Clockwise, traffic usually keeps close to its typical speed through the day; the slowest hour is 17:00. Anticlockwise, the slowest daytime hour is 08:00, about 10 mph below the typical speed.
Average speed by hour of day at J17
Clockwise
Anticlockwise
Incidents per week at J17
The latest 5 here
- Wed 21 Oct, 10:02 (10:02am) Collision ✓Reported by National Highways
M25 clockwise between junctions J17 and J18
✓ Cleared after about 24 minutes - Mon 19 Oct, 14:24 (2:24pm) Broken Down Vehicle ✓Reported by National Highways
M25 clockwise between junctions J16 and J17
✓ Cleared after about 73 minutes (1.22 hours) - Mon 19 Oct, 08:14 (8:14am) Collision ✓Reported by National Highways
M25 clockwise between junctions J17 and J18
✓ Cleared after about 17 minutes - Fri 16 Oct, 07:44 (7:44am) Collision ✓Reported by National Highways
M25 clockwise between junctions J16 and J17
✓ Cleared after about 27 minutes - Mon 12 Oct, 08:02 (8:02am) Other ✓Reported by National Highways
M25 clockwise between junctions J16 and J17
✓ Cleared after about 25 minutes
Built from our own records of National Highways’ live data for the M25 either side of J17: speeds from 10 days of five-minute readings, incidents from the last 13 days (we started recording incidents on 09/10/2026). Each incident is counted once. Updated every five minutes.
- Junction M25 J17, Maple Cross
- Roads at this junction A412
- Nearest town Rickmansworth, 1.6 miles east
- Junction before J16, Denham, about 5.4 miles in a straight line
- Junction after J18, Chorleywood, about 1.4 miles in a straight line
Around M25 Junction 17: Maple Cross: Towns and Places on the Map
| Place | What it is | From the junction |
|---|---|---|
| The Causeway | Attraction | About 1 mile east |
| Chiltern Open Air Museum | Attraction | About 1.5 miles west |
| Moor Park | Historic house or castle | About 2.5 miles east |
| Croxley | Railway station | About 3 miles east |
| Cassiobury Park Station | Attraction | About 4 miles north-east |
| Northwood | Railway station | About 4 miles south-east |
| Watford | Railway station | About 4 miles east |
| Amersham | Railway station | About 5 miles north-west |
