ISO 15623:2013 pdf free

ISO 15623:2013 pdf free.Intelligent transport systems – Forward vehicle collision warning systems
The purpose of the FVCWS is to provide warnings that will assist drivers in avoiding or reducing the severity of rear end crashes. These warnings should be provided in time to help drivers avoid most common rear end crashes by applying the brakes only. The timing of the alerts should be selected such that they strive to provide alerts early enough to help the driver avoid the crash or mitigate the harm caused by the crash without introducing other alerts perceived as nuisance or false. FVCWS provide warning only and do not perform vehicle control to mitigate the crash.
FVCWS may operate differently when the subject vehicle is applying an automatic braking commanded by other system in the vehicle such as full speed range ACC. In this situation, the FVCWS could take into account the capability of the automatic braking system. The fact that the vehicle is under sustained automatic braking may affect the warning criteria and warning modality.
No warning is performed in the FVCWS off state. It is optional to provide a driver-selected means of placing FVCWS in this state, other than the Ignition key (for example: on/off Switch). Upon turning the ignition to the off position, the FVCWS transitions to the FVCWS off state. Whenever the Self-Test function determines that the FVCWS is not able to deliver adequate performance, a fault condition is set and FVCWS transitions to the FVCWS offstate.
No warning is performed in the FVCWS standby state. In this state, FVCWS monitors the vehicle speed and the gear position. If the vehicle speed comes within the FVCWS operating range and the gear select is in forward position (all gear positions except reverse and park), the system transitions from the standby state to the active state. FVCWS enters the FVCWS standby state from the FVCWS off state if the ignition cycle has been completed and the engine is running, or if the engine is running and the optional on/off switch is the “on” position. FVCWS enters this state from the active state if the conditions for activating are not met: if the vehicle speed value is outside the FVCWS operation range (hysteresis delta is added), reverse gear is selected, or park is selected.ISO 15623 pdf download.