Final answer:
At a road sign indicating an exit with a recommened speed of 35 mph, you should decrease your speed to exit the expressway safely. While there is some leeway for slight inaccuracies in speedometers, exceeding speed limits by a significant amount can lead to traffic citations.
Step-by-step explanation:
When driving, it's essential to be aware of and adhere to road signs and speed limits to ensure safety and comply with the law. Near a road sign indicating 'Exit to right for Highway No. 35. Slow to 35 miles per hour to exit expressway,' you should decrease your speed to the recommended 35 miles per hour to safely exit the expressway. This speed limit serves as guidance for a safe turning speed. However, on the expressway itself, unless other signs indicate differently, you must maintain the minimum speed specified by that expressway's regulations or the general speed limits applicable to that area if no minimum speed is posted.
Additionally, the interpretation of speed limits has some leeway. The speedometer in your vehicle may not be entirely accurate, and a slight excess over the speed limit—such as driving 31 miles per hour in a 30-mile zone—might not result in a penalty. However, exceeding the limit beyond that could lead to a traffic citation. It is essential to be aware that the severity of penalties can increase with the amount by which the speed limit is exceeded.