Rahu Mahadasha starts instantly after the Mars Mahadasha.
Endeavor and endowed with energy,
Having the sole desire of research for the new boundaries
Impatient for a change with own efforts
Active and reactive,
On the other hand, Rahu is:
Not ready to hard work but wanting more by following all the illegal way to gain the advantage.
Now this change in the status of the native from the Martian significance to the Rahu signification is not immediately. The Antar Dasha of Rahu in the Mahadasa of Rahu is this transformation period where both the qualities in the native are visible.
As the Dasha of Rahu-Rahu gets older, the Martian traits keep on disappearing whereas the Rahu’s attributes moderately start crawling in and make them powerful by each passing day.
So, in a Summery at the start up of the Rahu Maha Dasha when Rahu’s Antar is also active, the native gets a mixture of results of both Rahu and Mars and with each passing day the in the Rahu’s period the swing of the balance increases towards the Rahu’s side.
So, it can be termed as a period which provokes / triggers the native, and one has to be extremely alert by not letting the malefic Rahu settle in.
The negativity of this Dasha (Rahu-Rahu) does not solely depend upon Rahu only as explained above; it also depends upon how the Mars period went.
Try to correct your Karma to convert harmful Rahu into a favorable Rahu.