Traffic Stats Credit Calculation

iNode uses an on-demand credit model to track distance-based usage. One iNode credit equals one mile (1.61 km). For example, 2,000 miles requires 2,000 credits, while 2,000 kilometers converts to 1,242 credits.

How Total Road Network Length is Calculated

The total number of kilometers (or miles) in Traffic Stats is calculated as follows:

Example:

• Route: 2 routes × 5 miles
• Number of Date Ranges: 3
• Credit Usage: (5+5) miles × 3 = 30 credits

Volume Estimation

For Traffic Volume Estimation, the formula above (how total road network length is calculated) is augmented with shadow studies that the system uses to establish baseline patterns.

What are Shadow Studies?

Shadow studies are automatically generated when the selected date range spans different day types (weekday vs. weekend) or crosses month boundaries.

To ensure accurate traffic volume modeling, the system requires representative probe samples for:

• Weekdays (Mon–Fri)
• Weekends (Sat–Sun)
• Each month included in the study

If a selected date range spans multiple days that include both weekdays and weekends, or spans multiple months, the system automatically generates additional shadow studies. Each shadow study consumes credits equal to the user-defined route length.

Shadow Study Examples

Below are examples illustrating how shadow studies are generated based on the selected date range and how credits are applied in each scenario.

Date Range Includes Only Weekdays or Only Weekends

1. Date Range Includes Weekdays Only

• Route: 1 mile
• Date Range: May 5–9, 2025 (Weekdays only)
• Shadow Studies Generated:
• May 5–9 (Weekdays) → 1 credit
• → +1 credit

2. Date Range Includes Weekdays and Weekends

• Route: 1 mile
• Date Range: May 5–12, 2025 (Weekdays and Weekend)
• Shadow Studies Generated:
• Weekday (May 5–7): 1 mile
• Weekend (May 10–11): 1 mile
• → +2 credits

Date Range Spans Multiple Months

1. Date Range Spans Multiple Months and Includes Weekends Only

• Route: 1 mile
• Date Range: April 1 – May 1, 2025 (Weekdays only)
• Shadow Studies Generated:
• April Weekday
• May Weekday
• → +2 credits

2. Date Range Spans Multiple Months and Includes Both Weekdays & Weekends

• Route: 1 mile
• Date Range: April 1 – May 1, 2025
• Shadow Studies Generated:
• April Weekday
• April Weekend
• May Weekday
• May Weekend
• → +4 credits

1-Year Date Range (e.g., AADT Analysis)

• Route: 1 mile
• Date Range: Full 12 months
• Days Covered: Weekdays and Weekends
• Shadow Studies Generated:
• 12 date ranges for each month (Weekdays)
• 12 date ranges for each month (Weekends)
• → +24 credits

Table of Content

• Traffic Stats Credit Calculation
• How Total Road Network Length is Calculated
• Volume Estimation
• What are Shadow Studies?
• Shadow Study Examples
• Date Range Includes Only Weekdays or Only Weekends
• Date Range Spans Multiple Months
• 1-Year Date Range (e.g., AADT Analysis)