Report
publication
Secondary train detection systems: Axle counters vs Track circuits
Axle counters vs Track circuits
Key parameters for choosing secondary train detection systems
CBTC systems drive the choice between axle counters and track circuits for train detection.
When upgrading metro systems with CBTC technology, both axle counters and track circuits play a crucial role as secondary detection systems. Each has distinct advantages, but the choice depends on their reliability, maintenance needs, and compatibility with modern signalling.
This paper provides comparison between axle counters and track circuits to help select the most suitable secondary detection system.
Contents:
- Introduction
- Issue
- Purpose of the study
- Methodology
- Abbreviations
- Survey contributors
- Questionnaire results
- Part 1 – Sensitive to environmental conditions
- Part 2 – Supply costs
- Part 3 – Track section length
- Part 4 – Broken rail detection
- Part 5 – Maintenance
- Conclusions
The report is based on the contribution of the following operators:
- STM
Montreal, Canada
- TMB
Barcelona, Spain
- TfL
London, United Kingdom
- CCR
São Paulo, Brazil
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