“…The mean time saved is in the order of 1-4 min, including both urban and rural environments (Brown et al, 2000;Ho and Casey, 1998;Ho and Lindquist, 2001;Hunt et al, 1995). The benefits when driving ambulances at high speed using lights and sirens are supposed to be rather limited, as this kind of transportation is dangerous for patients, personnel and fellow road users (Kahn et al, 2001;Lawrence, 1994;Solomon, 2003). Therefore, the use of warning lights and sirens has become a controversial issue (Ho and Casey, 1998).…”