Final answer:
The speed limit in a NJ residential or business district is 25 mph. This is enforced to ensure the safety of pedestrians and motorists. Exceeding this limit can result in fines, even though there might be a small leeway for minor infringements.
Step-by-step explanation:
The correct speed limit in a New Jersey residential or business district is 25 mph. It is important to adhere to this limit to ensure safety within these areas, which frequently have pedestrian traffic and parked vehicles. Speed limits are strictly enforced, and exceeding them can lead to traffic citations and fines.
Comparing with other speed limits, 50 kilometers per hour is equivalent to about 31 miles per hour, which is higher than the residential speed limit in NJ. In some contexts, law enforcement may provide a margin of error for speeds slightly over the limit due to inaccuracies in speedometers, but consistently exceeding the limit can result in fines. In contrast, interstate highways often have higher speed limits, such as 100 km/h, which translates to approximately 62 miles per hour.