Uniformat G4090

Traffic signal

A traffic signal has a useful life of about 25.1 years, the median of 25 published sources, which state 10–60 years.

Also listed as traffic light, signalized intersection, stop lights

• Confidence C
• Version 0.5.0 (permanent link)
• Reviewed 2026-10-22

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.

Work out when yours is due for replacement · Compare with what municipalities assume

Basis

• 20 years · Amherstburg: Tangible Capital Assets Policy, Appendix A: TCA Categories, Life Years, and Thresholds, p7 (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 (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 (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 (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 (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 (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 (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 (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 (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 (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 (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 (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 (accounting life)
  Capital asset policy (amortization period). Approved on text check: the label and value were found on the cited page.
• 14.5 years · Bruce: Asset Management Plan 2025, Bruce County, p44 (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 25 years · Chatham-Kent: Detailed Asset Management Plan: Roads 2025, p10 (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 25.1 years · Kirkland Lake: Asset Management Plan 2025 Town of Kirkland Lake, p49 (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 30 years · Lanark: Asset Management Plan 2022, p133 (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 30 years · Norfolk County: 2025 Asset Management Plan, p49 (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 30 years · Oxford: Oxford County Asset Management Plan 2025, p307 (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 20 years · Peterborough: Asset Management Plan 2025 - Peterborough County, p44 (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 60 years · Prescott and Russell: The United Counties of Prescott and Russell's 2025 Asset Management Plan, p57 (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 27 years · Sault Ste. Marie: Roadway Appurtenance Asset Management Plan, City of Sault Ste. Marie, p15 (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 25 years · Thunder Bay: Future-Ready Roadmap: Asset Management Plan Phase Three, p51 (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 35 years · Wellington: County of Wellington 2025 Asset Management Plan, p118 (planning life)
  Asset management plan (planning life). Approved on text check: the label and value were found on the cited page.
• 27.6 years · Cornwall: 2025 Asset Management Plan City of Cornwall, p252 (planning life)
  Asset management plan (planning life). Compared with an image of 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, v0.5.0. https://unfinished.one/c/traffic-signal/v/0.5.0

BibTeX

@misc{unfinished_traffic_signal_0_5_0,
  title = {Traffic signal},
  author = {{unfinished.one}},
  year = {2026},
  version = {0.5.0},
  url = {https://unfinished.one/c/traffic-signal/v/0.5.0},
  note = {CC BY 4.0}
}

Licence CC BY 4.0 · How to cite · JSON · Versions: 0.5.0, 0.4.0, 0.3.0, 0.2.0, 0.1.0