Final answer:
The requirement for a reflectorized red decal is generally linked to new drivers with a graduated license, not specifically to any of the vehicle types listed in the options. Local laws may vary, so it's important to check the specific regulations in your area.
Step-by-step explanation:
In some jurisdictions, drivers with a graduated driver’s license, such as provisional or probationary drivers, must display a reflectorized red decal on their vehicle’s front and back license plates. This requirement is typically part of a graduated driver licensing system aimed at enhancing road safety by clearly identifying new drivers. The answer to the question is none of the options provided (“Motorcyclists”, “Cyclists”, “Pedestrians”, “Drivers of trucks”) specifically need a reflectorized red decal. Instead, this requirement is linked more to the driver’s license status than to the type of vehicle operated. It's important to note that each region or country may have different regulations, and one should always check local laws for precise requirements.