Can having a mobile phone switched on in the vehicle be dangerous?
A)No, if it is not going to be used.
B)No, because it is not a noise that can distract the driver.
C)Yes, the sound of the phone, like any other noise, can startle the driver.Correct
It is clear that talking on a mobile phone while driving can create risks due to the distractions it generates. The simple fact of having it switched on can startle the driver with the unexpected sound of an incoming call. Any unexpected sound unrelated to driving can startle the driver.