Related Clues:

• Parking garage features
• Parts of cloverleafs
• Wheelchair-accessible routes
• Slopes
• Highway exits
• Cloverleaf parts
• Cloverleaf features
• Inclines
• They go on and off highways
• Inclined surfaces
• Sloping surfaces
• Highway approaches
• Level connectors
• They go on and off
• Increases, with 'up'