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1f3cf4fe56
adjust_desired_speed_for_braking_test runs after the target speed was worked out and overwrites AccDesired. In its third phase it holds the deceleration near fAccThreshold until the speed has dropped by 8 km/h. On a 20 per mille descent that application barely holds the speed, so the phase can last minutes, and a stop signal coming up meanwhile is ignored. In one real-time run an E186 with 19 container wagons started the test 1290 m before a stop signal, lost 7 km/h by the signal and overran it by 274 m after the emergency application. While the test runs the AI now uses whichever of the two asks for the harder braking: the test may brake harder than the route needs, never softer. Measured in real time, four runs of 32 consists each on a 20 per mille descent, on the flat and on the descent with half the rail adhesion: the test no longer runs within 600 m of a stop signal (before: down to 414 m on this branch, and 14 m with the overrun above in a build with other brake changes), no overruns, stops 8-15 m short of the signal 86, 117 and 83 of 128 (before 90, 117 and 78).