<image>As shown in the figure, it describes the relationship between the distance traveled and time from point A to point B by Xiaoming on a motorcycle from 8 AM to 2 PM. Based on the information provided by the line chart, consider the following questions:
(1) By 12 PM, how many kilometers has this person traveled in total?
(2) How many times and during what time periods did this person rest on the way from point A to point B?
(3) What is the highest speed this person reached in kilometers per hour?