When may an audible warning device for reversing be used in areas with a 30 mph speed limit? When may an audible warning device for reversing be used in areas with a 30 mph speed limit?

• Possible answers:

   
• A. Between 7.00 am and 11.30 pm
• B. Between 11.30 pm and 7.00 am
• C. During daylight hours only
• D. At any time of the day or night