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Tachographs are mandatory for vehicles allowed to carry a total weight of over 3.5 tonnes and vehicles built to carry at least 9 passengers, if the vehicle is used for commercial purposes. They are used to review the driving and rest time of drivers during reviews by traffic standards organizations or accident investigation.
Tachymeter scale on a Citizen watch bezel. A tachymeter (pronounced / t æ ˈ k ɪ m ə t ər /) is a scale sometimes inscribed around the rim of an analog watch with a chronograph.It can be used to conveniently compute the frequency in inverse-hours of an event of a known second-defined period, such as speed (distance over hours) based on travel time (distance over speed), or measure distance ...
Tachometer. A tachometer that can indicate up to 7000 RPM (left) A tachometer ( revolution-counter, tach, rev-counter, RPM gauge) is an instrument measuring the rotation speed of a shaft or disk, as in a motor or other machine. [ 1] The device usually displays the revolutions per minute (RPM) on a calibrated analogue dial, but digital displays ...
Best of Traffic – 1969 US #48, AUS #12. Heavy Traffic – 1975 US #155. More Heavy Traffic – 1975 US #193. Smiling Phases – 1991. Heaven Is in Your Mind - An Introduction to Traffic – 1998 (part of Island's An Introduction to... series) Feelin' Alright: The Very Best of Traffic – 2000 (re-released in 2007 as The Definitive Collection ...
From 1979 to 2005, the number of deaths per year decreased 14.97% while the number of deaths per capita decreased by 35.46%. The 32,479 traffic fatalities in 2011 were the lowest in 62 years, since 1949. [5] For 2016, the NHTSA reported 37,461 people killed in 34,436 fatal motor vehicle crashes, an average of 102 per day. [6]
A virtual speedometer is a computer-generated tool that displays the current speed of a vehicle or object. The virtual speedometer typically calculates the object's speed based on the distance it travels over time. Such speedometers are programmed using programming languages such as HTML, CSS, and Javascript.
The primary tool for graphically displaying information in the study traffic flow is the fundamental diagram. Fundamental diagrams consist of three different graphs: flow-density, speed-flow, and speed-density. The graphs are two dimensional graphs. All the graphs are related by the equation “flow = speed * density”; this equation is the ...
A traffic counter is a device, often electronic in nature, used to count, classify, and/or measure the speed of vehicular traffic passing along a given roadway. The device is usually deployed in near proximity to the roadway and uses an on-road medium, such as pneumatic road tubes laid across the roadway, piezo-electric sensors embedded in the ...