excellent works. couple of questions:
1. where did the 300 comes from in 300 - 200 = 100 m - Second audio warning. is unit always m and km/h even for US?
2. is it possible to have more than 2 warnings?
3. why id/type have new second values? (ex: speed=1 or 192) is 192 value used by .spc and 1 by .txt?