The weather in Hawaii is a freezing 70 degrees during the morning hours with a cool tropical breeze flowing from the Windward side of the island. You may need to bring a t-shirt with you and a pair of shorts for those cold November mornings. The day-time however gets to a balmy 85 degrees.
Some freeways have fixed point to point cameras 5km apart so you can't beat them by slowing down for the camera as they will get your average speed between the two points - same deal - 3 km over, fine. Cops will pull you over in their vehicles if they detect you speeding anything over about 4kmh over the speed limit. In Australia speed fining is all about blatant government revenue raising - this despite government propaganda calling them safety cameras.
You should always keep your speed below the maximum speed limit for the road you are driving on. Although you are not legally obliged to drive at the maximum speed limit, if it is safe to do, you should try and drive at a speed that at least approaches it, for instance, in a 40mph zone your speed should be between 35 and 40mph. Driving too slowly can be as dangerous as driving too fast.