Minnesota Restaurant Trip Generation Calculator

An essential tool for developers, planners, and engineers to estimate the vehicle trips per day generated by restaurants in Minnesota for traffic assessments.

Estimate Vehicle Trips

Trip Projections by Restaurant Size

Gross Floor Area (sq. ft.)	Estimated Total Daily Trips

This table projects the total daily vehicle trips for the selected restaurant type at various sizes.

What is the calculation used for trips per day generated by restaurants in Minnesota?

The calculation used for trips per day generated by restaurants in Minnesota is a method used in transportation planning and civil engineering to estimate the volume of vehicle traffic a restaurant will produce. This process, known as trip generation, is critical for conducting traffic impact studies, which assess how a new development will affect the surrounding road network. Minnesota, like most states, generally follows the methodologies and data provided by the Institute of Transportation Engineers (ITE) in their official Trip Generation Manual. The calculation helps developers, city planners, and engineers in Minnesota to ensure that new restaurants do not unduly congest roadways and that adequate infrastructure, like turn lanes or traffic signals, is planned for.

The Formula for Restaurant Trip Generation

The core of the calculation is a formula that multiplies the size of the establishment by a specific rate. The most common independent variable is the Gross Floor Area (GFA).

A simplified version of the formula is:

Total Daily Trips = (Gross Floor Area / 1000) * Trip Rate

The “Trip Rate” is not a single number; it varies significantly based on the restaurant’s type, location, and the time of day. This calculator uses widely accepted ITE average rates for different restaurant categories.

Formula Variables

Variable	Meaning	Unit	Typical Range
Gross Floor Area (GFA)	The total enclosed area of the restaurant.	Square Feet	1,000 – 15,000
Trip Rate	The number of vehicle trips generated per 1,000 sq. ft. of GFA. This is an empirical value from the ITE Manual.	Trips / 1,000 sq. ft.	90 – 650 (highly dependent on type)
Total Daily Trips	The final estimated number of two-way vehicle trips over a 24-hour weekday period.	Vehicle Trips	Varies

Need to assess your site’s traffic impact? Learn more about the process of a Traffic Impact Study Minnesota.

Practical Examples of Trip Calculation

Example 1: A New Sit-Down Restaurant in Rochester

• Inputs:
  • Restaurant Type: High-Turnover (Sit-Down)
  • Gross Floor Area: 6,500 sq. ft.
• Calculation: Using a typical weekday trip rate for a high-turnover restaurant (approx. 125 trips per 1,000 sq. ft.), the calculation is (6,500 / 1,000) * 125.
• Results: The restaurant would be estimated to generate approximately 813 total vehicle trips per day.

Example 2: A Small Fast-Food Location in Duluth

• Inputs:
  • Restaurant Type: Fast-Food with Drive-Through
  • Gross Floor Area: 2,500 sq. ft.
• Calculation: Fast-food establishments have much higher rates (e.g., ~495 trips per 1,000 sq. ft.). The calculation is (2,500 / 1,000) * 495.
• Results: This smaller restaurant would generate around 1,238 trips per day, highlighting the significant impact of service type.

How to Use This Minnesota Restaurant Trip Calculator

1. Select the Restaurant Type: Choose the option that best describes the establishment. “High-Turnover” refers to typical family-style or casual sit-down restaurants, while “Fast-Food” includes a drive-through, which significantly increases trip counts.
2. Enter Gross Floor Area (GFA): Input the total size of the restaurant in square feet. This should be the building’s footprint, not including outdoor patios.
3. Review the Results: The calculator instantly provides the total estimated daily trips, along with a breakdown for the critical morning (AM) and evening (PM) peak traffic hours.
4. Analyze Projections: Use the dynamic table and chart to understand how trip generation scales with restaurant size and how trips are distributed throughout the day. This is a key part of Land Use Planning MN.

Key Factors That Affect Restaurant Trip Generation

The actual calculation for trips per day generated by restaurants in Minnesota can be influenced by several factors beyond just size and type:

• Location and Density: An urban restaurant in Minneapolis may have fewer car trips than a suburban one in Maple Grove due to walkability and transit access.
• Pass-By Trips: Many restaurant visits are not new trips on the road network. They are “pass-by” trips, made by drivers who were already passing the site. Traffic studies account for this, often reducing the “new” trip total by 30-50%.
• Public Transit Access: Proximity to a bus or light rail station can significantly reduce the number of vehicle trips.
• Menu and Price Point: Fine-dining establishments typically have lower turnover and thus fewer trips per square foot compared to a high-volume, quick-service restaurant. Check our Commercial Development Traffic tool for more financial insights.
• Time of Day: A breakfast and lunch cafe will have a different peak traffic pattern than a dinner-only steakhouse.
• Mixed-Use Developments: A restaurant within a larger shopping center or office complex may share trips, a concept known as internal capture.

Frequently Asked Questions (FAQ)

1. What is the source of the trip rates used in this calculator?

The rates are based on the data and methodologies published in the Institute of Transportation Engineers (ITE) Trip Generation Manual, the industry standard for these calculations across North America, including Minnesota.

2. How accurate is this calculator?

This calculator provides a reliable planning-level estimate based on standard industry data. However, a formal Traffic Impact Study conducted by a licensed traffic engineer is required for official project approval, as it will consider site-specific factors like pass-by trips and local traffic counts.

3. Does this calculation apply to a food truck?

No. Food trucks are mobile and do not have a fixed Gross Floor Area, so this calculation method is not applicable. Their traffic impact is typically considered temporary and is assessed differently by municipalities.

4. What are “peak hour” trips and why are they important?

Peak hour trips are the trips that occur during the busiest hour of traffic on the adjacent street (typically 7-9 AM and 4-6 PM). These are the most critical for analysis because they show the restaurant’s maximum impact on an already congested system.

5. Why do fast-food restaurants generate so many more trips?

Their business model is based on high volume and quick customer turnover. The inclusion of a drive-through facility dramatically increases the number of trips a site can process per hour compared to a sit-down restaurant of the same size. Understanding the Restaurant Parking Requirements is also crucial.

6. Does MnDOT have its own trip generation rates?

While the Minnesota Department of Transportation (MnDOT) provides guidance for traffic studies, it generally relies on and accepts the use of the ITE Trip Generation Manual as the primary source for trip rates.

7. What is the difference between a “trip” and a “trip end”?

In traffic analysis, one vehicle trip has two “trip ends”: an origin and a destination. For example, a car driving from home to a restaurant is one trip. The ITE data often reports in trip ends, so a trip rate might be presented per vehicle trip end. This calculator converts everything to the more intuitive “vehicle trip” metric (1 in + 1 out = 2 trip ends = 1 trip for some models).

8. Does the calculator account for weekend trips?

This calculator focuses on average weekday trips, which is the standard for most traffic impact assessments. Weekend rates for restaurants are often higher but are analyzed separately as roadway traffic patterns are different. The Vehicle Miles Traveled (VMT) Calculator can provide broader insights.