USLIMITS3 (FHWA)
( previously USLIMITS2 )


Overview and Guidance
Roadway Type Roadway Context
Rural Rural Town Urban/Suburban Urban Core
Freeways Rural Freeways All Other Freeways
Divided Roadways Rural Divided Roadways Rural Town Roadways Urban/Suburban Divided Highways Urban Core Roadways
Undivided Roadways Rural Undivided Roadways Urban/Suburban Undivided Highways
Rural Freeways
Speed Limit Setting Expert System Module
Project Information
Analyst
Date
Roadway Name
Start Point
End Point
Project Description
Current Speed Limit
Notes
Operating Speed Data (Optional)
Description
Input
Guidance or Warnings
50th Percentile Range
85th Percentile Range
Site Characteristics (Optional)
Description
Input
Guidance or Warnings
Length (Miles)
Annual Average Daily Traffic
Statutory or Other Maximum Speed Limit
Number of Lanes
Adverse Alignment Present
Sight Distance Concern Present
Mountainous Terrain Present
Left Shoulder Width
Right Shoulder Width
Directional Design-Hour Truck Volume
Safety Performance Data (Optional)
Description
Input
Guidance or Warnings
Fatal and Injury Crashes (Study Corridor)
Years of Crash Data (Study Corridor)
Fatal and Injury Crash Rate (Similar Sites)
Agency-Specific Crash Concern Present
Safe Systems Concern Present
Safety Performance Category
Engineering Factor Index Calculation
Factor
Description
Weight
Safety Performance Category
Adverse Alignment or Available Sight Distance Concern
Mountainous Terrain Present
Limited Left Shoulder Width
Limited Right Shoulder Width
Speed Limit Recommendation
Recommendation
Guidance or Warnings