First off, this has everything to do with noise abatement and citizens' concerns than anything else. It does not really have any bearing on entering any of the other airspaces as mentioned by some.
Both runway 22 departures at EWR
call for immediate heading changes to get the aircraft over the water as opposed to the land for noise abatement.
While in the early 80s and before the FAA introduced the Expanded East Coast Plan (EECP) in the 90s the bearing change from the initial 190 turn to the 220 happened a little later than 2.3 DME
which was then pulled back to the current 2.3 DME
due to noise concerns over the Staten Island area. Newark also has take off minimums of at least 410 ft climb rate to minimize noise.
These DP's are specifically designed for traffic to stay out of the surrounding airports LGA, JFK's airspace. Why do you think the Canarie Climb (CRI) DP was created.... for traffic to not go into LGA's airspace.
I agree that the turns to 290 (rwy 4s) and the 220 turn (rwy 22s) is indeed to get out of each others airspaces, but I think the question was, why the initial
turn to 060 (rwy 4s) and 190 (rwy 22s)? If at all these turns put traffic closer to LGA
Since the EECP, when introduced, did not take into consideration traffic below 3000' these procedures have stayed. Apparently there were tests conducted by the FAA on straight-out departures at EWR
and there are allegations that the findings were destroyed. There is a lot of political wrangling that took place of EWR
's departures and the saga still continues. Until a decision is reached, these procedures are here to stay.
I'm all in favour of keeping dangerous weapons out of the hands of fools. Let's start with keyboards.