6.0 Curb Radii

Overview

Chapter 6.0 of the City of Toronto Transportation Services road engineering design guidelines, version 1.1.1, on sizing curb radii at intersection corners. Written after a 2014 review of the division's standards against the Transportation Association of Canada geometric design guide and North American practice, it defines constrained corners, sets the design controls of intersection corner type, truck turn type and vehicle speed, fixes vehicle starting and ending positions and envelope clearances, and supplies design methodology, vehicle dimensions, truck turn type and large truck percentage maps and curb radii design tables.

What it covers

• Background
• 6.0 Curb Radii
• 6.1 Introduction
• 6.1.1 Definitions
• 6.2 Design Controls
• 6.2.1 Intersection Corner Type
• 6.2.2 Truck Turn Type
• 6.2.4 Vehicle Speed
• 6.3 Vehicle Positions and Clearances
• 6.3.1 Vehicle Starting Position
• 6.3.3 Vehicle Envelope Clearances from Curb Radii
• 6.4 Curb Radius Design
• 6.4.1 Design Considerations
• 6.4.2 Design Methodology
• 6.4.3 Application
• 6.5 Supplemental Information
• 6.5.1 Vehicle Dimensions
• 6.5.2 Truck Turn Type Map
• 6.5.3 Large Truck Percentage Map
• 6.5.4 Curb Radii Design Tables