M25 Junction 1B: Princes Road (A225, A226, A282, A296)
Junction 1B, also on the A282, is the main turn for Dartford town centre, under a mile west, on the A225 and the A296. Darent Valley Hospital is about a mile south-east. Junction 2 is less than a mile further south, so traffic weaves on and off here in a short space.
For Dartford town centre and Darent Valley Hospital, Junction 1B is the turn, whether you are a patient, a visitor, a shift worker or delivering in town. This page shows what is around it and how it has been running.
Check this junction now: live M25 speed flow map · latest M25 traffic news · M25 serious incidents · M25 accidents
M25 Junction 1B Now: Accidents, Incidents and Roadworks
Live traffic news at M25 Junction 1B
This is the news for Junction 1B 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 21:52 (9:52pm) Wed 21 Oct 2026
Live Traffic Speeds at M25 Junction 1B
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 J1B in Our Records
No accidents, breakdowns or obstructions at J1B have reached us in the last 13 days. Clockwise, the slowest daytime hour is 07:00, about 7 mph below the typical speed. Anticlockwise, traffic usually keeps close to its typical speed through the day; the slowest hour is 17:00.
Average speed by hour of day at J1B
Clockwise
Anticlockwise
Incidents per week at J1B
Built from our own records of National Highways’ live data for the M25 either side of J1B: speeds from 11 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 J1B, Princes Road
- Roads at this junction A225, A226, A282, A296
- Nearest town Dartford, 0.9 miles west
- Junction before J1A, Littlebrook, about 0.7 miles in a straight line
- Junction after J2, Darenth, about 0.8 miles in a straight line
Around M25 Junction 1B: Princes Road: Towns and Places on the Map
| Place | What it is | From the junction |
|---|---|---|
| Darent Valley Hospital | Hospital | About 1 mile south-east |
| Beacon Wood Country Park | Park or nature reserve | About 2.5 miles south-east |
| Slade Green | Railway station | About 2.5 miles north-west |
| Swanscombe | Railway station | About 3 miles east |
| Hall Place and Gardens | Attraction | About 3.5 miles west |
| Moto Thurrock Services | Motorway services | About 3.5 miles north |
| Bexley | Railway station | About 4 miles west |
| Erith and District Hospital | Hospital | About 4 miles north-west |
