According to the “Analysis of Speeding-Related Fatal Motor Vehicle Traffic Crashes” published by the National Highway Traffic Safety Administration: “NHTSA research has shown that crashes in which at least one driver was exceeding the legal speed limit or driving too fast for conditions cost $40.4 billion in 2000, representing about 20 percent of the total economic cost of motor vehicle traffic crashes in the United States. Annually, about 32 percent of all fatalities in motor vehicle traffic crashes were speeding-related, i.e., at least one of the drivers involved in the crash exceeded the posted speed limit or was driving too fast for the prevailing conditions.”
The NHTSA website is located at: http://www.nhtsa.dot.gov/
There is a great site that summarizes all state traffic and speed laws. The site contains a summary of and links to state laws related to speeding, and in particular excess speeding and reckless driving. The site is very thorough and even has a section on radar detectors. An exerpt from the website follows:
“Radar detectors are illegal in cars in Virginia and the District Of Columbia. Radar jammers, and possibly other devices like IR-absorbing license plate covers, are explicitly illegal in California (VC §28150), Colorado (HB1045 effective July 1, 2005), the District of Columbia, Illinois (625 ILCS 5/12-613 effective January 1, 2006), Oklahoma (47-11-808), Minnesota (169.14(12)), Nebraska (60-6.275), Utah (41-6a-609), and Virginia (46.2-1079). The FCC claims even “passive” radar jammers are illegal under federal law; see their 1997 opinion and order in the Rocky Mountain Radar case. This order was affirmed by the tenth circuit court of appeals in October, 1998 (Rocky Mountain Radar v. FCC, 158 F.3d 1118; cert. denied 119 S. Ct. 1045 (1999)).
To convict a driver of exceeding a speed limit, a visual estimate of speed must be supported by radar or some other speed measuring device in Nebraska (60-6,192(1)) and Pennsylvania (75 PA C.S. 3368). Lack of corroborating evidence does not prevent police from charging reckless driving, driving too fast for conditions, or any other offense other than speeding.
A similar rule applies in parts of Ohio. The districts of the state appeals court are in disagreement on whether, as one judge wrote, “the mere educated guess of the arresting officer as to the speed of a vehicle” can constitute proof beyond a reasonable doubt.
A Virginia law requiring police to show drivers the reading on the radar gun has been repealed.”
The website can be seen at: http://www.mit.edu/~jfc/laws.html
If there are any calculators you would like to see, please email me: