Can the emergency craft skip speed-matching and still stay safe?

The question

Speed-matching caused the delay, so it was switched off, with own dodging kept at a fifth. That cost some safety, so the craft then announced its next seconds of flight as a moving reserved corridor that other craft leave.

What was tested

Runs at 2× with speed-matching off or at 5 %, then three corridor shapes.

What was found then

With speed-matching off the craft was on time, but ordinary losses rose from 82 to 91 and the emergency craft was lost once in five runs. A 5 % share was no cheap middle ground, so zero was chosen. The 10-second wide corridor kept it on time, with 78 ordinary losses and no emergency craft lost, a gain within noise. The narrow 10-second corridor lost the most (101), read then as width, not warning time, buying safety. On the layered network ordinary losses did not differ.

What we learned later

What changed

Switches for the speed-matching share and the reserved corridor were added, off by default. The 'calm set' of emergency rules (speed-matching off, own dodging at a fifth, 10-second wide corridor) was carried forward, not adopted.