Which sign prohibits vehicles carrying explosives?

• A. No Buses Over 8 Passenger Seats
• B. No Vehicle Or Combination Of Vehicles Over Length Shown
• C. No Left Turn
• D. No Vehicles Carrying Explosives

Answer: (D)

Prohibition signs use a red circular border to tell you that a certain action is not allowed. The sign that bans vehicles carrying explosives is the one that shows a vehicle with an explosive symbol inside the red circle. It means you must not proceed if your vehicle is carrying explosives, and you should not transport them past that point.

This is the correct choice because it directly targets the hazardous load in question, matching the symbol’s meaning. The other signs prohibit different things—one about buses with a certain number of seats, one about vehicle length, and one about turning left—so they do not address explosives and are not applicable here.