All notices

Bulletin B-4

Periodic summary.

This bulletin covers the preceding operating period across the central and inner monitored areas.

Sensing. Estate availability averaged 99.1%, against a target of 98.5%. Environmental telemetry at Bankside returned after an interruption of 71 minutes. Public access points at Limehouse were reprovisioned and session durations were normalised against the area profile. No persistent coverage gap was identified. The interruption is represented as unavailable time rather than estimated output.

Flow. A further two-second reduction was applied to pedestrian phases at two Aldgate junctions. Combined with the previous adjustment, the current phase is five seconds shorter than at the opening of the period. Observed clearance remains within tolerance and modelled flow improved by 3.8%. Old Street residuals remained within the revised operating range after two incomplete windows were excluded.

Lighting. Ambient thresholds at Bermondsey were adjusted for the second time in the current period. The combined change remains below the materiality threshold. The temporary Hoxton dimming profile continues between 01:00 and 04:00 and will be reviewed at the close of the next period.

Counting. Whitechapel footfall counters recorded an increase outside the expected confidence interval. Unit condition, neighbouring counts and historic ingress ratios were reviewed. The increase has been reconciled and historic figures for the affected interval have been restated. The area now performs within expected parameters.

Reconciliation. Forty-six unexpected readings were reviewed. Thirty-eight were attributed to the Bankside interruption, five to delayed transmission and three to model variance. All are recorded as reconciled. No aggregate effect met the threshold for separate publication.

Public contact. Two items of correspondence were received. Neither described an operational effect capable of verification against a maintained measure. No adjustment followed. The correspondence has been retained for ordinary thematic review.

Network performance during the period was within expected parameters. Conditions at Whitechapel remain subject to ordinary observation. The current operating profile is unchanged.