Awesome job, and even though the sirens are loud, I like the realism aspect. The engine did cut out weirdly just before the crash, but either way, this is very well done. And this level of detail is impressive too!
greetings, I shall respond here, and I shall also send you a private message containing the same contents as this comment. Examining the terms of the creative commons 3.0 noncommercial, I have gathered the following. I may share, copy, or redistribute the work. I may also adapt, remix, or transform the material as I see fit... except, for commercial purposes. Under the following conditions. A. I cannot use the material for commercial purposes (I.E., sell it, monetize it on a platform, etc). B. I must give proper attribution to the original author, (I.E., link to the original media). Best.
Some of the sounds you've used are non-free. I.e. 33181 by ERH is cc-noncommercial (i.e. it is only for personal use), so you can release it as -BY license. I would suggest omitting the source of such non-free sounds, and changing their pitch a bit, that way nobody will ever find that you have stolen them, especially when they are mixed with other sounds, and even if they find it, they will have a very hard time proving that at court.
This was recorded with a pair of sound professionals sbtfb ts or something. Basically a set of binaural microphones from sound professionals. Sadly I no longer have these microphones. Glad you like it! Plenty of spatial audio in the binaural microphones pack... Binaural microphones in general are things of beauty if used correctly.