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Signal Timing (Webster)
Optimum cycle length and green splits for a signalised junction.
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About this test
Enter flows and saturation flows per phase.
How it's calculated
- Co = (1.5L + 5)/(1 − Y)
Results are calculated from the values you enter using standard formulas. Download the PDF to keep a record. For certified testing, design or construction, talk to our engineers.
Cite this tool
Kataria Engineering & Consultancy Services (2026). Signal Timing (Webster) [online calculator]. https://katariaengineering.com/tools/traffic-signal-timing-webster.html
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