Columns, lanterns, signals, cabinets and the feeder between them — 48,200 assets inventoried curb to curb across 1,240 km of kerb, each one placed to its chainage with a lux reading beside it.
The sheet above is a drawing of this. 10 capture waypoints, and every finding called as the aircraft reaches it — scroll sets the target, the mission keeps its own pace, and the page waits for it.
0.9CM DETAILWP10 / 10FIND06 / 06SPECIMEN SITE · ILLUSTRATIVE RECORD
LEGPOSTCARDALT+49MSPD15.0M/SASSETS1880DARK09
Sector · Streetscapes
THE STREET, AFTER DARK.
One governed pass down a high street at the hour the work is done: every column placed and every pool measured against its design, the failed feeder's dark lanterns logged to asset number, the lining gang caught mid-relay — then the unit walks the crossing at eye level while the leg comes back on, lantern by lantern.
The asset register says 46,000 columns. The street says something else, and the difference gets discovered one work order at a time.
An inventory that matches the street
A capture pass places every column, lantern, sign and feeder pillar on a georeferenced map, with chainage, 8.0 m mounting height, 24 m pitch and lamp type read straight off the frame.
Outages arrive by phone call. A dark lantern on a quiet feeder can stand out for six weeks before anyone bothers to dial.
Faults reported by the survey, not the resident
The night run logs every dark or under-performing lantern against its asset number, assigns it to the maintenance contractor and closes it on the record. Unplanned dark time is down 64% in the first year.
Observations & issuesDARK LANTERNS · ASSIGNED · MEAN TTR 4.1HDARK LANTERNS · ASSIGNED · MEAN TTR 4.1H
03
A replacement programme bills 900 columns in a month across four wards, and verifying the claim means driving all of them.
Pay for the columns that are standing
Each billed line is tied to the frame that shows the new column in the ground at its chainage. Claimed and verified sit side by side before the certificate is signed.
STREET · 48 200 POLES · WARDS 27STREET · 48 200 POLES · WARDS 27
On the numbers
48,200 poles
Columns inventoried curb to curb
41 lx
Mean maintained illuminance mapped on the block
−64%
Unplanned outages, first year on the record
ENERGIZED · STREETSCAPES · 32 SECTORS ON THE SHEETENERGIZED · STREETSCAPES · 32 SECTORS ON THE SHEETEvery sector we work in
PROGRAM · 27 WARDS · DAY + NIGHTPROGRAM · 27 WARDS · DAY + NIGHT
The capture program
The street is surveyed on its own two clocks — the daylight run that places every asset at its chainage, and the night run after 22:00 when the lamps are at full output and the light itself can be measured. Both land on one register.
InstrumentCadenceOn the record
01
Kerbside survey run
Ward by ward, in daylight traffic
A vehicle run down the near lane places every column, lantern, signal, sign and feeder pillar on a georeferenced map — 8.0 m mounting height and 24.0 m pitch read straight off the frame, each asset addressed by number and chainage.
Illuminance is mapped along the kerb while the lamps are at full output: CH 0+048 read 36 lx against a 40 lx design, and nine dark lanterns were logged to their asset numbers by 00:36. The contractor had the list before the depot opened.
U0 0.41 · MIN 12LX · 36LX AT CH 0+048U0 0.41 · MIN 12LX · 36LX AT CH 0+048
03
Certificate verification pass
On each claim, before the certificate is signed
Each billed line of the replacement programme is tied to the frame that shows the new column in the ground at its chainage. Claimed and verified sit side by side before the money moves.
Our register says 46,000 columns. What does the street say?
48,200. The survey places every column, lantern, sign and feeder pillar at its chainage, with mounting height and lamp type read off the frame — including the 2,200 the register never met. The difference stops being discovered one work order at a time.
REGISTER 46 000 · STREET 48 200 · Δ2 200REGISTER 46 000 · STREET 48 200 · Δ2 200
Q02
Do we wait for a resident to phone in a dark lamp?
No. The night run logs every dark or under-performing lantern against its asset number — nine of them by 00:36 on the last run — and the maintenance contractor has the list before the depot opens at 07:15. Mean time to repair is 4.1 hours; unplanned dark time is down 64% in the first year.
LOGGED 00:36 · LIST 07:15 · TTR 4.1HLOGGED 00:36 · LIST 07:15 · TTR 4.1H
Q03
Is the street actually lit to design?
The lux profile along the kerb answers block by block: minimum 12 lx, uniformity 0.41 — and where it misses, it says where. CH 0+048 read 36 lx against a 40 lx design and went on the record with the frame behind it.
U0 0.41 · MIN 12LX · 36LX AT CH 0+048U0 0.41 · MIN 12LX · 36LX AT CH 0+048
Q04
How do we verify a 900-column claim without driving four wards?
Each billed line carries the frame that shows the new column standing at its chainage. Nine hundred claimed, nine hundred verified, side by side before the certificate is signed — and nobody drives anything.
48,200 assets across 1,240 km of kerb, every one addressed by asset number and chainage — column C12-03 on Elm Street answers to CH 0+048. The ward engineer, the contractor and the certificate all read the same register.
BRIEFS 3 · PROFILES 27 · RECORD CLOSED 02:00BRIEFS 3 · PROFILES 27 · RECORD CLOSED 02:00
Who reads it
Read overnight on a network like this one: the night run, the asset register at its current state, the fault list and the claim lines waiting on a certificate. Three of the 27 profiles wake up to it.
The night run closed at 00:36 with nine dark lanterns logged to asset number, and CH 0+048 reading 36 lx against a 40 lx design — the block's lux profile is on the record with the frames behind it.
CITES: NIGHT RUN 22:10 · LUX PROFILE · ASSET REGISTER
Foreman
PROFILE 23 / 27
07:15 · DEPOT · WARD 4
TODAY
Nine lanterns on the sheet, each with an asset number and a chainage, sorted along the route — the van is loaded before the depot opens and nothing on the list needs finding twice.
CITES: NIGHT RUN 00:36 · LIST 07:15
CFO
PROFILE 11 / 27
06:55 · PROGRAMME · 4 WARDS
CASH
The replacement certificate signs on the survey: 900 columns claimed and 900 verified, each line carrying the frame that shows the column at its chainage. The money moves on evidence, not on a drive-by.
CITES: CLAIM LINES 900 · FRAMES 900 · WARD 4
SHEET · 4 OF 48 · STREETSCAPESSHEET · 4 OF 48 · STREETSCAPES