SPEEDING and RADAR

 Radar Law and Speeding tickets

         In State v. Dantonio, l8 N.J.
570 (l955),  the N.J. Supreme Court held
there can be variation in the Radar.

         State v. Readding, l69 N.J.
Super. 238 (Law Div. l978) restated the general rule that in order for the
radar speedometer reading to be admissible into evidence, it should be
established that: (l) the device is scientifically reliable; (2) the particular
speedometer used in the case being tried is accurate; (3) the operator is
qualified; and (4) the device was operated properly in the case being tried.

          In State v. Wojtkowiak, l70
N.J. Super. 44 (Law Div. l979), rev'd on other grounds, l74 N.J. Super. 460,
the Court set forth that the traffic radar method speed detection measurement
depends upon the Doppler effect.  Simply
stated a radio wave which strikes a moving object is reflected from that object
at different frequency from that of the incident wave.  A radar which transmits waves and receives
reflected waves can determine their frequency difference and calculate the
speed of the object which produced the reflective wave.

         Although most police use MPH
Industries' K-55 Traffic Radar -- the primary system employed for the purpose
of measuring the speed of motor vehicles in New Jersey -all radar units are susceptible
to error.