M4 westbound Reading Services exit slip road closure

Cleared

Start time: Tue, Apr 14, 2026 8:00 PM
Expected end: Wed, Apr 15, 2026 5:00 AM
Duration: 9 hours
Road: M4 – M4 Westbound Between J11 And J12
Category: Road Maintenance
Direction: Westbound
Carriageway: Dual Carriageway
Reason: Repair Work

Live incident

Active roadworks

Planned

Cleared

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First published: Mon, Mar 23, 2026 8:34 AM
Last updated: Wed, Apr 15, 2026 4:15 AM
Cleared: Wed, Apr 15, 2026 5:00 AM

Latest update: M4 westbound Reading Services exit slip road closure

Coordinates: 51.422793, -1.029257
Latitude span: 51.422300 – 51.423002
Longitude span: -1.030970 – -1.026305
Bounding box centre: 51.422651, -1.028638
Location descriptions: M4 westbound between J11 and J12

M4 exit slip at Reading Services

Feed validity status: Planned
Overall feed start: Tue, Apr 14, 2026 8:00 PM
Overall feed end: Wed, Apr 15, 2026 5:00 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

3 coordinate pairs

Description: M4 westbound between J11 and J12
Carriageway: Dual Carriageway
Lanes Restricted: 4 lanes restricted
Operational Lanes: 0 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: {04195248-78FF-4235-97B9-49703B81A0D5}
Linear Element Type: A Carriageway
From Distance: 1,905 m
To Distance: 2,032 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.4223 -1.026305
51.422584 -1.027713
51.422653 -1.028052

Segment 2

19 coordinate pairs

Description: M4 exit slip at Reading Services
Lanes Restricted: 1 lane restricted
Operational Lanes: 0 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: {049BD5B0-4E5B-B8A0-D9B9-3F9EFDC34E69}
Linear Element Type: A Carriageway Exit Slip
From Distance: 0 m
To Distance: 208 m
Gml Srs Name: EPSG::4326
Gml Srs Dimension: 2

Raw coordinate list

51.422653 -1.028052
51.422647 -1.028177
51.422669 -1.028399
51.422671 -1.028408
51.422672 -1.028414
51.422711 -1.02861
51.422748 -1.028835
51.422789 -1.029114
51.422816 -1.029296
51.422856 -1.029572
51.422859 -1.029596
51.422956 -1.030196
51.422958 -1.03021
51.423002 -1.030499
51.422999 -1.030695
51.422997 -1.030713
51.422977 -1.030883
51.422963 -1.030938
51.422954 -1.03097

Geometry type: MultiLineString
Geometry points: 22
First coordinate pair: -1.026305, 51.422300
Road section segments: 1
Road section points: 22

View geometry JSON

{
    "type": "MultiLineString",
    "coordinates": [
        [
            [
                -1.026305,
                51.4223
            ],
            [
                -1.027713,
                51.422584
            ],
            [
                -1.028052,
                51.422653
            ],
            [
                -1.028052,
                51.422653
            ],
            [
                -1.028177,
                51.422647
            ],
            [
                -1.028399,
                51.422669
            ],
            [
                -1.028408,
                51.422671
            ],
            [
                -1.028414,
                51.422672
            ],
            [
                -1.02861,
                51.422711
            ],
            [
                -1.028835,
                51.422748
            ],
            [
                -1.029114,
                51.422789
            ],
            [
                -1.029296,
                51.422816
            ],
            [
                -1.029572,
                51.422856
            ],
            [
                -1.029596,
                51.422859
            ],
            [
                -1.030196,
                51.422956
            ],
            [
                -1.03021,
                51.422958
            ],
            [
                -1.030499,
                51.423002
            ],
            [
                -1.030695,
                51.422999
            ],
            [
                -1.030713,
                51.422997
            ],
            [
                -1.030883,
                51.422977
            ],
            [
                -1.030938,
                51.422963
            ],
            [
                -1.03097,
                51.422954
            ]
        ]
    ]
}

View road section coordinates

Cause type: Road Maintenance
Detailed cause: Repair Work
Compliance: Mandatory
Probability: Probable
Validity status: Planned
Road management: Carriageway Closures