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IEMI Labs
All product designs
VisionStage 2 ready, 29 Oct 2026: smart near-side signal head that runs the crossing's detection (8 calls, 6 alone, 2 assist); buyer check, prices checked ($749 parts per approach at qty 1), margin 67-76 % (est.); 21 fits and 15 camera and radar views checked in the CAD; not built

RoadOne

IEMI's one product for public roads: the crossing's own traffic light, made smart

The red, amber and green signal head already standing on the near-side pole at a signalised crossing, at the same 356 x 254 x 1,067 mm size, bracket and feeds, places a walk demand for people waiting, extends the crossing time for a slow walker, places vehicle demand, counts every road user all year, measures speeds, and reports red-light running, near misses, a blocked crossing and a dark lamp.

Who buys it
Traffic signal and road safety teams at city and county councils, state DOTs and UK highway authorities, and their signal maintenance contractors.
Why it pays
$2,990 + $59/month per approach instead of about $5,560 + $95/month for a plain signal head, RoadSense AI and a video detection camera bought separately (est.).
Target price
$2,990 per approach (replaces its near-side signal head) + $59/month crossings app with LTE-M (target)
First-minute wow
06:52: a grandparent with a pushchair is still in the near lane when the green man ends, and the signal head they walked past holds the crossing for six more seconds.
See the CAD designConcept page
RoadOne concept: the idea and where each part goes
The concept. The CAD design is below, under Printable CAD.

What the research found

And how this design answers it

  • Rev A (28 Oct 2026): the public sector roads flagship is the signalised crossing's own 3-section 12 in near-side vehicle signal head. Head floor: Raspberry Pi 5 brain, Walter LTE-M, ATECC608, piezo, and the Camera Module 3 Wide approach camera behind a floor window 25 degrees down the approach; road-side wall: Camera Module 3 Wide crossing camera; back wall: HLK-LD2450 kerb radar, three YHDC SCT-013 lamp clamps and an ADS1115, LSM6DSOX, three Omron G5V-1 controller contacts, two NeoPixel Stick call lights, Mean Well IRM-20-5, PowerBoost 1000C and LiPo; Omron D2F-01 tamper switch pressed by the door; the head's own LED modules stay in front
  • Makes the crossing's calls itself: walk demand, crossing extension, vehicle demand and counts, near misses, a blocked crossing and signal faults alone; speed and red-light running as clips and statistics for the engineer; unsure means 'check' and the controller keeps its own timings
  • Legal on the street: MUTCD 4D.15 mounting height (8.7 ft above the footway), 80 in footway headroom and nothing over the roadway, checked in the CAD; the controller and its conflict monitor keep every phase
  • Nothing added to the street: no counter on a lamp column, no detection camera on its own mast arm, no box on the pole
  • Stage 2 (29 Oct 2026): buyer check (3-section LED heads $285-295 in public bids, Miovision state contract: detection licence $3,000-6,500 per intersection plus $195-750 a year per service, Iteris on bundled city contracts), brain now the same-size Raspberry Pi 5 2 GB ($90; the 4 GB is $130), prices checked ($749 parts per approach at qty 1), price kept at $2,990 + $59/month, top-three FAQs and a power and size spec

Use case

A council's signalised crossing outside a school, with no one watching it

Traffic signal engineerRoad safety officerMaintenance contractorTransport planner

  1. 01Trigger: people waiting at the kerb, a slow walker on the crossing, vehicles coming, a car over the line on red, a turning car close to a person, a dark lamp
  2. 02Detect: approach and crossing cameras, the kerb radar and the lamp clamps inside the crossing's own signal head
  3. 03Act: walk demand, extension and vehicle demand contacts on the controller's own detector inputs; the 'seen you' light and a tone
  4. 04Log: one signed crossing log with counts, speeds, clips and faults for the engineer, the safety officer and the contractor

Outcome: People waiting get the green man, slow walkers get across, every road user is counted all year, and near misses and faults are found before anyone is hurt

How it works

Architecture

  1. 01

    Sense: approach and crossing cameras, a kerb radar and lamp clamps inside the signal head

  2. 02

    Decide: vehicle, cyclist and pedestrian detection with tracking, near-miss timing and fault rules on the Raspberry Pi 5; 'check' below the line

  3. 03

    Act: dry contacts on the controller's own detector inputs; the 'seen you' light and tone

  4. 04

    Tell: one signed log, counts and calls to the crossings app over LTE-M

Hardware

Real parts, buyable today

Bill of materials: $749 per approach at qty 1 with the plain signal head ($344 of it is the head and its windows, est.); replaces the approach's near-side head.

BlockPartWhy this part
BrainRaspberry Pi 5 (2 GB)Runs the detector, the trackers and every call
See2 x Raspberry Pi Camera Module 3 Wide + HLK-LD2450Vehicles coming, the stop line and the crossing, people waiting and still crossing
Signal and controller3 x YHDC SCT-013 + ADS1115, LSM6DSOX, 3 x Omron G5V-1Which phase is showing, a dark lamp, a knock; walk, extension and vehicle demand on the controller
Calls, security, power and uplink2 x NeoPixel Stick 8, piezo, ATECC608, Omron D2F-01, Mean Well IRM-20-5, PowerBoost 1000C, LiPo, DPTechnics Walter'Seen you' light and tone, signed calls, tamper log, the fault path with the head dark

Mechanical

Printable CAD

3 parts, generated from code and checked as closed solids. Pick a part to inspect it, or download the STL files to print.

Loading the CAD…

Real CAD · drag to rotate · scroll to zoomReal CAD · swipe sideways

Open risks we are working on

  • Sun, snow and spray blind the cameras at times: the contacts then hold a call (the safe side) and the counts are marked 'check'
  • Authorities qualify detectors slowly: RoadOne is built to connect like a video detection camera, and pilots run beside the existing detection first
  • Red-light and speed data could be mistaken for enforcement: RoadOne never issues a ticket
  • Big detection makers sell into the same cabinets; our edge is the head itself, with nothing added to the street
  • RoadOne never replaces the controller, its conflict monitor or the accessible push buttons

Design stage only: nothing on this page is for sale. Specifications and prices are targets.