Can motorcycles go on highways in Hainan?

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Motorcycles are not allowed on highways in Hainan. Here are some precautions for motorcycle riding: Running-in period: During riding, it should be noted that the engine speed during the running-in period should not exceed 50% of the maximum power speed, and the maximum speed should not exceed 75%. After the running-in period: The maximum riding speed should not exceed 75% of the maximum power speed, as this may cause unnecessary malfunctions during riding. Gear usage: Taking a common 125CC motorcycle as an example. First gear is only used for low-speed starts or climbing very steep slopes. Immediately after starting, shift into second gear. Second gear is generally suitable for speeds between 10-20, third gear is suitable for speeds between 20-40, fourth gear is suitable for speeds between 30-50, and speeds above 40 can generally be driven in fifth gear.