Must Police Use Horn or Siren While Signaling a Vehicle to Stop ?
In People v. Murdock, 321 Ill. App. 3d 175, 177, 748 N.E.2d 683, 254 Ill. Dec. 965 (2001), the Court held that proof that the pursuing officer was wearing a uniform is an essential element of the offense and that it was lacking. Murdock, 321 Ill. App. 3d at 177.
The Court did not decide whether an officer who is driving a vehicle and giving a motorist a signal to stop must use a horn or siren in addition to utilizing "illuminated oscillating, rotating or flashing red or blue lights." the legislature used the word "shall" when it referenced the police uniform requirement but not in its reference to the horn or siren.