Related Clues:

• They go on and off
• Increases, with 'up'
• Level connections
• Freeway egresses
• Artery connections
• Stadium walkways
• Freeway feeders
• Freeway accesses
• They comply with the ADA
• Boat launches
• Freeway exits
• Highway entrances
• Interstate entrances
• Cruise ship accesses
• Some sloped surfaces