Speed lines

The system of speed lines, sometimes called "1/3-2/3 Lines" is a set of two trend lines which spread the change in price in three regions.

Method of calculation and interpretation
Their construction and interpretation is similar to Fibonacci Pennants. The difference is that the slopes of these two lines are in percentages of 33.3% and 66.6% (instead of 38.2%, 50% and 61.8% for Pennants Fibonacci).
We observe on the curve of price corresponding to a significant trend and we draw a line connecting the highest and the lowest (or vice versa) on this period.

The height between these two points is the basis for "Speed lines". Plot two lines from the origin point of the previous trend with slopes such as these lines cut the previous height as percentages of 33.3% and 66.6%.
Next to a major change in the trend, Speed lines set out the lines of support and resistance, targets for the correction that will follow

Example