Related Clues:

• Sounds from 3-Down
• Hits a bicycle horn
• Traffic signals
• Party-horn blasts
• Electronic alerts
• Short high warning tones
• Blows one's horn
• Makes noise like the Road Runner
• Hornblower's sweetheart?
• Pager signals
• Urban cacophony
• Traffic toots
• Horn sounds — honey
• Toots of a horn
• Blows one's horn?