A longitudinal dynamics management device for vehicles is provided, the
device having at least one first function unit which performs
predetermined driving functions by output of a longitudinal dynamics
management setpoint value, and a second function unit which is
independent of the first function unit. The safety functions of the
second function unit are performed independently of internal operands of
the first function unit. The safety functions include acceleration
monitoring and/or monitoring of jolts. With acceleration monitoring, a
check is performed to ascertain whether the actual vehicle acceleration
and/or the expected acceleration resulting from the setpoint value is
independent of a setpoint vehicle acceleration, within an acceleration
range regarded as controllable by the driver. With jolt monitoring, a
check is performed to ascertain whether the change in actual vehicle
acceleration and/or the expected change in vehicle acceleration is within
a range regarded as controllable by the driver.