Compare calculators
Both calculators run independently β change the inputs on either side to compare results.
Civil
Traffic Signal Timing Calculator
Determine the optimal signal cycle length and green time splits for a two-phase intersection. Used by traffic engineers when designing or re-timing signals to minimize delay and prevent overflow queuing.
Fill in the required fields to see your result.
Civil
Culvert Flow Capacity Calculator
Estimate the full-flow discharge capacity of a circular culvert using Manning's equation. Used by civil engineers and hydrologists to size culverts for road crossings, drainage channels, and stormwater systems.
Fill in the required fields to see your result.
Key differences
| Traffic Signal Timing Calculator | Culvert Flow Capacity Calculator | |
|---|---|---|
| Category | Civil | Civil |
| Inputs required | 4 | 3 |
| Result | Optimal Cycle Length (seconds) | Flow Capacity (cfs) |
| What it does | Determine the optimal signal cycle length and green time splits for a two-phase intersection. Used by traffic engineers when designing or re-timing signals to minimize delay and prevent overflow queuing. | Estimate the full-flow discharge capacity of a circular culvert using Manning's equation. Used by civil engineers and hydrologists to size culverts for road crossings, drainage channels, and stormwater systems. |