Crash View

M4 eastbound (47/0) to A404M northbound (45/6) lane 1 closure

Planned

M4 eastbound (47/0) to A404M northbound (45/6) lane 1 closure

Start time
Tue, Nov 3, 2026 8:00 PM
Expected end
Wed, Nov 4, 2026 6:00 AM
Duration
10 hours
Road
M4 – M4 Eastbound Between J10 And J8
Category
Road Maintenance
Direction
Eastbound
Carriageway
Dual Carriageway
Lanes affected
Lane 1 closed, 1 of 3 lanes affected, 1 of 1 lanes affected, 1 of 2 lanes affected
Reason
Repair Work
Live incident
Active roadworks
Planned
Cleared
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First published
Tue, Nov 3, 2026 1:18 PM
Last updated
Tue, Nov 3, 2026 8:28 PM
Cleared
Wed, Nov 4, 2026 6:00 AM
  • Latest update: M4 eastbound (47/0) to A404M northbound (45/6) lane 1 closure
Coordinates
51.495719, -0.733224
Latitude span
51.489602 – 51.499227
Longitude span
-0.747017 – -0.725365
Bounding box centre
51.494415, -0.736191
Location descriptions
  • M4 eastbound between J10 and J8
  • M4 J8 eastbound exit
Feed validity status
Planned
Overall feed start
Tue, Nov 3, 2026 8:00 PM
Overall feed end
Wed, Nov 4, 2026 6:00 AM
Feed window length
10 hours
Probability code (raw)
probable
Compliance option (raw)
mandatory
Source identification (raw)
roadworks
Management type value
other
Contra-flow flag (raw)
false
Width restriction flag (raw)
false
Height restriction flag (raw)
false
Weight restriction flag (raw)
false

Segment 1

5 coordinate pairs
Description
M4 eastbound between J10 and J8
Carriageway
Dual Carriageway
Lane Usage
Cl1
Lane Number
1
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
3 operational lanes
Direction On Section
East Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
M4
Linear Element Model
The Network Model
Linear Element Id
{6D452CED-D559-49F3-B872-855A40BD59BB}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
248 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.494226 -0.736111
51.494796 -0.735122
51.495575 -0.733785
51.495591 -0.733758
51.495738 -0.733481

Segment 2

8 coordinate pairs
Description
M4 eastbound between J10 and J8
Carriageway
Dual Carriageway
Lane Usage
Cl1
Lane Number
1
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
3 operational lanes
Direction On Section
East Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
M4
Linear Element Model
The Network Model
Linear Element Id
{394E8C98-DFB9-11A5-473C-261E7C67F490}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
350 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.495738 -0.733481
51.49584 -0.733289
51.496164 -0.732719
51.496169 -0.732708
51.496341 -0.732369
51.496512 -0.73203
51.497202 -0.730478
51.497606 -0.729419

Segment 3

4 coordinate pairs
Description
M4 J8 eastbound exit
Lane Usage
Cl1
Lane Number
1
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
1 operational lane
Direction On Section
East Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
M4
Linear Element Model
The Network Model
Linear Element Id
{5D520C88-5696-BF09-20D8-2657C361C750}
Linear Element Type
B Carriageway Exit Slip
From Distance
0 m
To Distance
70 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.498291 -0.727875
51.498366 -0.727672
51.498426 -0.727491
51.498592 -0.726987

Segment 4

7 coordinate pairs
Description
M4 J8 eastbound exit
Lane Usage
Cl1
Lane Number
1
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
0 operational lanes
Direction On Section
East Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
M4
Linear Element Model
The Network Model
Linear Element Id
{1AAC16A0-1888-4775-B896-0F1797E3EA61}
Linear Element Type
B Carriageway Exit Slip
From Distance
0 m
To Distance
132 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.497606 -0.729419
51.49761 -0.729414
51.497724 -0.729274
51.497956 -0.728698
51.498083 -0.728367
51.498291 -0.727876
51.498291 -0.727875

Segment 5

13 coordinate pairs
Description
M4 eastbound between J10 and J8
Carriageway
Dual Carriageway
Lane Usage
Cl1
Lane Number
1
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
3 operational lanes
Direction On Section
East Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
M4
Linear Element Model
The Network Model
Linear Element Id
{083D6D01-FC84-49B1-87BC-C7037B790508}
Linear Element Type
B Carriageway
From Distance
568 m
To Distance
1,487 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.489602 -0.747017
51.490069 -0.745562
51.490376 -0.74468
51.490479 -0.744388
51.490924 -0.743206
51.491339 -0.742124
51.49178 -0.741082
51.491978 -0.740598
51.493074 -0.738272
51.493446 -0.737553
51.493963 -0.73657
51.494149 -0.736246
51.494226 -0.736111

Segment 6

6 coordinate pairs
Description
M4 J8 eastbound exit
Lane Usage
Cl1
Lane Number
1
Lane Status
Closed
Lane Direction
Aligned
Lanes Restricted
1 lane restricted
Operational Lanes
2 operational lanes
Direction On Section
East Bound
Direction Relative
Aligned
Height Grade
Start1 End1
Linear Element Road
M4
Linear Element Model
The Network Model
Linear Element Id
{09E91B3A-8DD8-E921-FB4D-60DFD4E37724}
Linear Element Type
B Carriageway Exit Slip
From Distance
0 m
To Distance
135 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.498592 -0.726987
51.498757 -0.726487
51.499012 -0.725655
51.499055 -0.725553
51.499112 -0.725464
51.499227 -0.725365
Geometry type
MultiLineString
Geometry points
43
First coordinate pair
-0.736111, 51.494226
Road section segments
1
Road section points
43
View geometry JSON 
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            [
                -0.733758,
                51.495591
            ],
            [
                -0.733481,
                51.495738
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
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            ],
            [
                -0.725464,
                51.499112
            ],
            [
                -0.725365,
                51.499227
            ]
        ]
    ]
}
View road section coordinates 
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        [
            -0.736111,
            51.494226
        ],
        [
            -0.735122,
            51.494796
        ],
        [
            -0.733785,
            51.495575
        ],
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        ],
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            51.495738
        ],
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        ],
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        ],
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        ],
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        ],
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        ],
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        ],
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        ],
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        ],
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            -0.726987,
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        ],
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        ],
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        ],
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        ],
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        ],
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        ],
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        ],
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        ],
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        ],
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        ],
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        ],
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        ],
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        ],
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        ],
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        ],
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            -0.725464,
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        ],
        [
            -0.725365,
            51.499227
        ]
    ]
]
Cause type
Road Maintenance
Detailed cause
Repair Work
Compliance
Mandatory
Probability
Probable
Validity status
Planned
Road management
Other
Feed provider
National Highways
Data source
Roadworks
Feed version
1
Record created
Tue, Nov 3, 2026 1:18 PM
Record versioned
Tue, Nov 3, 2026 8:28 PM
Coordinate source
Geometry

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