M4 westbound Jct 12 exit slip lane 3 closure

Planned

Start time: Fri, Oct 3, 2025 7:00 PM
Expected end: Sat, Oct 4, 2025 5:00 AM
Duration: 10 hours
Road: M4 – M4 J12 Westbound Exit
Category: Road Maintenance
Direction: Westbound
Lanes affected: Lane 3 closed, 1 of 3 lanes affected, 1 of 1 lanes affected
Reason: Roadworks

Active

Planned

Cleared

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First published: Wed, Oct 1, 2025 2:07 AM
Last updated: Fri, Oct 3, 2025 9:48 PM
Cleared: Sat, Oct 4, 2025 5:00 AM

Latest update: M4 westbound Jct 12 exit slip lane 3 closure

Coordinates: 51.438090, -1.064600
Latitude span: 51.437775 – 51.438300
Longitude span: -1.065343 – -1.063657
Bounding box centre: 51.438038, -1.064500
Location descriptions: M4 J12 westbound exit

Feed validity status: Planned
Overall feed start: Fri, Oct 3, 2025 7:00 PM
Overall feed end: Sat, Oct 4, 2025 5:00 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 J12 westbound exit
Lane Usage: Cl3
Lane Number: 3
Lane Status: Closed
Lane Direction: Aligned
Lanes Restricted: 1 lane restricted
Operational Lanes: 3 operational lanes
Direction On Section: West Bound
Direction Relative: Aligned
Height Grade: Start1 End1
Linear Element Road: M4
Linear Element Model: The Network Model
Linear Element Id: {C4676A65-CA9E-4A52-9735-BC385A84AC32}
Linear Element Type: A Carriageway Exit Slip
From Distance: 0 m
To Distance: 85 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.43798 -1.064234
51.438044 -1.064413
51.43825 -1.065017
51.438298 -1.065302
51.4383 -1.065343

Segment 2

2 coordinate pairs

Description: M4 J12 westbound exit
Lane Usage: Cl3
Lane Number: 3
Lane Status: Closed
Lane Direction: Aligned
Lanes Restricted: 1 lane restricted
Operational Lanes: 1 operational lane
Direction On Section: West Bound
Direction Relative: Aligned
Height Grade: Start1 End1
Linear Element Road: M4
Linear Element Model: The Network Model
Linear Element Id: {459F1E5A-D4C3-C531-812C-866BBA30F76B}
Linear Element Type: A Carriageway Exit Slip
From Distance: 280 m
To Distance: 326 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.437775 -1.063657
51.43798 -1.064234

Geometry type: MultiLineString
Geometry points: 7
First coordinate pair: -1.064234, 51.437980
Road section segments: 1
Road section points: 7

View geometry JSON

{
    "type": "MultiLineString",
    "coordinates": [
        [
            [
                -1.064234,
                51.43798
            ],
            [
                -1.064413,
                51.438044
            ],
            [
                -1.065017,
                51.43825
            ],
            [
                -1.065302,
                51.438298
            ],
            [
                -1.065343,
                51.4383
            ],
            [
                -1.063657,
                51.437775
            ],
            [
                -1.064234,
                51.43798
            ]
        ]
    ]
}

View road section coordinates

Cause type: Road Maintenance
Detailed cause: Roadworks
Compliance: Mandatory
Probability: Probable
Validity status: Planned
Road management: Other