EA_TEST requirement 5.9.2.3 Driver must ack the OS mode.
EA_TEST requirement 5.9.1.1 OBU shall be in OS mode, before and in OS area
EA_TEST requirement 5.9.2.7 if OBU is in OS mode, when receiving a new OS mode no more ack is needed.
EA_TEST requirement 5.9.1.1 OBU shall be in OS mode, before and when in  OS Mode area. Requirement 5.9.2.1 When receiveng a balise with MP OS, the mode should be OS.
EA_TEST requirement 5.9.2.2 In level 2 or 3, when receiving a MP with OS, the train should change to OS mode
EA_TEST requirement 5.9.2.2 In level 2 or 3, when receiving a MP with OS, the train should change to OS mode. Commented version
Merge branch 'openETCS/master'
Merge branch 'openETCS/master'
Merge branch 'openETCS/master'
EA_MODEL requirements 5.5.2.1.1 and 5.5.2.1.3 From certain modes to SB mode is considered End of Mission and From PT to SB there is needed an on going mission
Merge branch 'openETCS/master'
EA_MODEL requirements 5.5.2.2.1 Entry in SL mode is considered EoM
EA_MODEL Requirement 5.5.2.2.1.1 Transition to SL is always made from SB mode. If there is a previous EoM, no more EoM needed.
EA_MODEL requirements 5.5.2.1.1, 5.5.2.1.3 and 5.5.2.2.1 remove requirement 5.5.2.2.1.1 and add requirement  4.10.1.3.8  Handle Gradient Profile
Merge branch 'openETCS/master'
Merge branch 'openETCS/master'
EA_MODEL requirement 4.10.1.3.9 Handle SSP
EA_TEST requirement 5.9.2.3 Driver must acknowledge the OS Mode
EA_MODEL requirement 4.10.1.3.9 Handle SSP
EA_MODEL requirement 4.10.1.3.9,  4.10.1.3.10,  4.10.1.3.24,  4.10.1.3.8,  4.10.1.3.7,  4.10.1.3.49,  4.10.1.3.46,  4.10.1.3.23,  4.10.1.3.32,  4.10.1.3.33
Handle different variables when changing mode according to table 4.10.1.3