Uniformat G4090

Traffic signal

Also called traffic light, signalized intersection, stop lights

• Confidence C
• Version 0.3.0 (permanent link)
• Reviewed 2026-10-22

This is version 0.3.0. The latest is 0.4.0.

Service life

Years in service. The band runs from the shortest to the longest life the sources state, so it shows how much they disagree, not how long 80% of units last. The line is the median of the stated lives.

Basis

• 20 years · Amherstburg: Tangible Capital Assets Policy, Appendix A: TCA Categories, Life Years, and Thresholds, p7 · “Infrastructure - Transportation - Traffic Lights” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 30 years · Barrie: City of Barrie Corporate Asset Management Plan: Proposed Levels of Service, p76 · “Traffic Signals” (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 40 years · Greater Madawaska: By-Law 21-2025 Tangible Capital Asset Policy (Finance Policy 4-02), p17 · “Traffic Signals” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 25 years · Grey Highlands: By-law No. 2026-052, Tangible Capital Asset Policy A09-F-03, p10 · “Traffic Signals” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 20 years · Kenora: AF-6-1 Tangible Capital Asset Policy (By-law 34-2026), p16 · “Miscellaneous - Traffic Signals” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 40 years · Kingston: Tangible Capital Assets Policy, p15 · “Roads and Related - Traffic signals” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 20 years · London: 2023 Corporate Asset Management Plan, p159 · “Signals” (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 25 years · Meaford: By-law 2020-83, Tangible Capital Asset Policy, Appendix A Estimated Useful Lives, p20 · “Linear - Traffic Signals” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 30 years · Orillia: 4.1.8.1 Tangible Capital Assets Policy Manual, p22 · “Roads: Traffic Lights” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 40 years · Quinte West: A09-POLICY-0034 Tangible Capital Asset Policy, p37 · “Traffic Signals” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 25 years · The Blue Mountains: POL.COR.19.04 Tangible Capital Assets Policy, p12 · “Linear - Traffic Signals” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 10 years · Trent Lakes: 5.17 Capital Asset Policy, p9 · “Traffic control equipment (Stop lights)” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 20 years · Welland: FIN-001-0012 Tangible Capital Assets Policy, p9 · “Traffic Signals” (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.

How sources are chosen and recorded: sourcing policy.

Preventive maintenance

1 tasks in 1 work order.

1. 1
2. 2
3. 3
4. 4
5. 5
6. 6
7. 7
8. 8
9. 9
10. 10
11. 11
12. 12Annual

Months from the schedule start. Download the tasks as CSV for a CMMS, or ask the MCP tool get_pm_schedule for dated visits.

Frequencies are ISO 8601 durations in the data (P3M = every 3 months).

Open questions

• These are Ontario accounting lives from municipal capital asset policies, not planning or observed replacement data.
• Written for freeway traffic management devices; the row used here is its inductive loop detector test, a part of actuated traffic signals.

Know the answer? Send it with a source to [email protected].

Cite this

Citation

unfinished.one (2026). Traffic signal, v0.3.0. https://unfinished.one/c/traffic-signal/v/0.3.0

BibTeX

@misc{unfinished_traffic_signal_0_3_0,
  title = {Traffic signal},
  author = {{unfinished.one}},
  year = {2026},
  version = {0.3.0},
  url = {https://unfinished.one/c/traffic-signal/v/0.3.0},
  note = {CC BY 4.0}
}

Licence CC BY 4.0 · How to cite · JSON · Versions: 0.4.0, 0.3.0, 0.2.0, 0.1.0