---
title: Travel Time Methodology and Validation
description: With congestion becoming an increasing concern, the transportation industry heavily relies on Travel Time Reliability (TTR) measures as key performance indicators to understand commuters’ experiences and help commuters plan for delays
---

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WHITE PAPER

# Travel Time Reliability Methodology and Validation

##### With congestion becoming an increasing concern, the transportation industry heavily relies on Travel Time Reliability (TTR) measures as key performance indicators to understand commuters’ experiences and help commuters plan for delays. Unexpected delays hit commuters and the economy, costing time and money. 

##### StreetLight has developed a suite of TTR metrics as part of the Congestion Management subscription package that is available on demand without additional post-processing requirements. 

##### Download our white paper to learn more about our methodology and validation, including:

- The suite of metrics used to derive Travel Time Reliability metrics  
- The proprietary machine-learning methodology and how it improves the TTR metrics 
- Validation studies comparing StreetLight’s metrics against ground-truth data  

### Read White Paper

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![Travel Time Reliability Cover](https://learn.streetlightdata.com/hubfs/White%20Papers/Travel%20Time%20Reliability/Travel%20Time%20Reliability%20(TTI)%202.png)

##### “StreetLight Volume estimates mirror the hourly trends reported by the permanent counters for weekdays and weekends. The strength of the CVD signal across the day provides confidence in our ability to report strong TTR metrics.”

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Travel Time Reliability White Paper

## Get on-demand vehicle speed data in a few clicks

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Multi-modal traffic counts for seamless infrastructure planning

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Granular congestion metrics segmented by time of day, day of week, road segment, county, and block

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Quick access to congestion metrics: vehicle hours of delay (VHD), volume, speed, travel time

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### Travel Time Reliability Methodology and Validation

[Read White Paper](https://learn.streetlightdata.com/travel-time-reliability-whitepaper#form-section)