Crash View

M4 eastbound Jct 18 between exit and entry slip road carriageway closure

Planned

M4 eastbound Jct 18 between exit and entry slip road carriageway closure

Start time
Wed, Oct 28, 2026 9:00 PM
Expected end
Thu, Oct 29, 2026 6:00 AM
Duration
9 hours
Road
M4 – M4 Eastbound Within J18
Category
Road Maintenance
Direction
Eastbound
Carriageway
Dual Carriageway
Reason
Roadworks
Live incident
Active roadworks
Planned
Cleared
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First published
Fri, Sep 25, 2026 8:42 AM
Last updated
Wed, Oct 28, 2026 1:02 AM
Cleared
Thu, Oct 29, 2026 6:00 AM
  • Latest update: M4 eastbound Jct 18 between exit and entry slip road carriageway closure
Coordinates
51.501526, -2.352692
Latitude span
51.499987 – 51.502078
Longitude span
-2.366824 – -2.335976
Bounding box centre
51.501032, -2.351400
Location descriptions
  • M4 eastbound within J18
  • M4 eastbound between J18 and J17
  • M4 eastbound between J19 and J18
Feed validity status
Planned
Overall feed start
Wed, Oct 28, 2026 9:00 PM
Overall feed end
Thu, Oct 29, 2026 6:00 AM
Feed window length
9 hours
Probability code (raw)
probable
Compliance option (raw)
mandatory
Source identification (raw)
roadworks
Management type value
carriagewayClosures (Carriageway Closures)
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 within J18
Carriageway
Dual Carriageway
Lanes Restricted
4 lanes 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
{F4DDBB46-70A5-4A49-9879-86CF9E3E0228}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
125 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.501999 -2.350667
51.501998 -2.350478
51.501994 -2.350265
51.501965 -2.348996
51.501959 -2.348864

Segment 2

6 coordinate pairs
Description
M4 eastbound between J18 and J17
Carriageway
Dual Carriageway
Lanes Restricted
4 lanes 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
{3076E318-401F-4607-BE8A-ECC40910170E}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
299 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.501862 -2.34028
51.501862 -2.340251
51.501911 -2.338897
51.50194 -2.338033
51.502016 -2.336737
51.502078 -2.335976

Segment 3

11 coordinate pairs
Description
M4 eastbound between J19 and J18
Carriageway
Dual Carriageway
Lanes Restricted
4 lanes 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
{AE403C52-5D62-47F7-9FDF-592C93083448}
Linear Element Type
B Carriageway
From Distance
4,473 m
To Distance
4,868 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.499987 -2.366824
51.500221 -2.365668
51.500367 -2.364947
51.500422 -2.364645
51.500495 -2.364372
51.500622 -2.363768
51.500896 -2.36256
51.500987 -2.362143
51.501005 -2.362044
51.501097 -2.361553
51.501124 -2.361438

Segment 4

13 coordinate pairs
Description
M4 eastbound within J18
Carriageway
Dual Carriageway
Lanes Restricted
4 lanes 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
{9E391445-CF68-43AC-BC41-5E75DA82EEA8}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
756 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.501124 -2.361438
51.501335 -2.360042
51.501367 -2.359813
51.501529 -2.358588
51.501593 -2.357984
51.501732 -2.356717
51.501797 -2.355983
51.501901 -2.354514
51.501968 -2.353088
51.501978 -2.352786
51.501988 -2.352498
51.502001 -2.351172
51.501999 -2.350667

Segment 5

7 coordinate pairs
Description
M4 eastbound within J18
Carriageway
Dual Carriageway
Lanes Restricted
4 lanes 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
{32FADBBC-F816-49E8-B496-866F25C3CB2F}
Linear Element Type
B Carriageway
From Distance
0 m
To Distance
596 m
Gml Srs Name
EPSG::4326
Gml Srs Dimension
2
Raw coordinate list 
51.501959 -2.348864
51.501887 -2.347152
51.501837 -2.345711
51.501791 -2.343132
51.501812 -2.341835
51.501805 -2.341388
51.501862 -2.34028
Geometry type
MultiLineString
Geometry points
42
First coordinate pair
-2.350667, 51.501999
Road section segments
1
Road section points
42
View geometry JSON 
{
    "type": "MultiLineString",
    "coordinates": [
        [
            [
                -2.350667,
                51.501999
            ],
            [
                -2.350478,
                51.501998
            ],
            [
                -2.350265,
                51.501994
            ],
            [
                -2.348996,
                51.501965
            ],
            [
                -2.348864,
                51.501959
            ],
            [
                -2.34028,
                51.501862
            ],
            [
                -2.340251,
                51.501862
            ],
            [
                -2.338897,
                51.501911
            ],
            [
                -2.338033,
                51.50194
            ],
            [
                -2.336737,
                51.502016
            ],
            [
                -2.335976,
                51.502078
            ],
            [
                -2.366824,
                51.499987
            ],
            [
                -2.365668,
                51.500221
            ],
            [
                -2.364947,
                51.500367
            ],
            [
                -2.364645,
                51.500422
            ],
            [
                -2.364372,
                51.500495
            ],
            [
                -2.363768,
                51.500622
            ],
            [
                -2.36256,
                51.500896
            ],
            [
                -2.362143,
                51.500987
            ],
            [
                -2.362044,
                51.501005
            ],
            [
                -2.361553,
                51.501097
            ],
            [
                -2.361438,
                51.501124
            ],
            [
                -2.361438,
                51.501124
            ],
            [
                -2.360042,
                51.501335
            ],
            [
                -2.359813,
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            ],
            [
                -2.358588,
                51.501529
            ],
            [
                -2.357984,
                51.501593
            ],
            [
                -2.356717,
                51.501732
            ],
            [
                -2.355983,
                51.501797
            ],
            [
                -2.354514,
                51.501901
            ],
            [
                -2.353088,
                51.501968
            ],
            [
                -2.352786,
                51.501978
            ],
            [
                -2.352498,
                51.501988
            ],
            [
                -2.351172,
                51.502001
            ],
            [
                -2.350667,
                51.501999
            ],
            [
                -2.348864,
                51.501959
            ],
            [
                -2.347152,
                51.501887
            ],
            [
                -2.345711,
                51.501837
            ],
            [
                -2.343132,
                51.501791
            ],
            [
                -2.341835,
                51.501812
            ],
            [
                -2.341388,
                51.501805
            ],
            [
                -2.34028,
                51.501862
            ]
        ]
    ]
}
View road section coordinates 
[
    [
        [
            -2.350667,
            51.501999
        ],
        [
            -2.350478,
            51.501998
        ],
        [
            -2.350265,
            51.501994
        ],
        [
            -2.348996,
            51.501965
        ],
        [
            -2.348864,
            51.501959
        ],
        [
            -2.34028,
            51.501862
        ],
        [
            -2.340251,
            51.501862
        ],
        [
            -2.338897,
            51.501911
        ],
        [
            -2.338033,
            51.50194
        ],
        [
            -2.336737,
            51.502016
        ],
        [
            -2.335976,
            51.502078
        ],
        [
            -2.366824,
            51.499987
        ],
        [
            -2.365668,
            51.500221
        ],
        [
            -2.364947,
            51.500367
        ],
        [
            -2.364645,
            51.500422
        ],
        [
            -2.364372,
            51.500495
        ],
        [
            -2.363768,
            51.500622
        ],
        [
            -2.36256,
            51.500896
        ],
        [
            -2.362143,
            51.500987
        ],
        [
            -2.362044,
            51.501005
        ],
        [
            -2.361553,
            51.501097
        ],
        [
            -2.361438,
            51.501124
        ],
        [
            -2.361438,
            51.501124
        ],
        [
            -2.360042,
            51.501335
        ],
        [
            -2.359813,
            51.501367
        ],
        [
            -2.358588,
            51.501529
        ],
        [
            -2.357984,
            51.501593
        ],
        [
            -2.356717,
            51.501732
        ],
        [
            -2.355983,
            51.501797
        ],
        [
            -2.354514,
            51.501901
        ],
        [
            -2.353088,
            51.501968
        ],
        [
            -2.352786,
            51.501978
        ],
        [
            -2.352498,
            51.501988
        ],
        [
            -2.351172,
            51.502001
        ],
        [
            -2.350667,
            51.501999
        ],
        [
            -2.348864,
            51.501959
        ],
        [
            -2.347152,
            51.501887
        ],
        [
            -2.345711,
            51.501837
        ],
        [
            -2.343132,
            51.501791
        ],
        [
            -2.341835,
            51.501812
        ],
        [
            -2.341388,
            51.501805
        ],
        [
            -2.34028,
            51.501862
        ]
    ]
]
Cause type
Road Maintenance
Detailed cause
Roadworks
Compliance
Mandatory
Probability
Probable
Validity status
Planned
Road management
Carriageway Closures
Feed provider
National Highways
Data source
Roadworks
Feed version
1
Record created
Fri, Sep 25, 2026 8:42 AM
Record versioned
Wed, Oct 28, 2026 1:02 AM
Coordinate source
Geometry

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