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An advisory speed limit is a speed recommendation by a governing body, used when it may be non-obvious to the driver that the safe speed is below the legal speed. It is a posting which either approximates the Basic Speed Law or rule (and is subject to enforcement as such) or is based on a maximum g-force exerted at a specific speed.
Traffic signals showing an advisory speed limit. Advisory speed limits may provide a safe suggested speed in an area, or warn of the maximum safe speed for dangerous curves. [citation needed] In Germany, an advisory speed limit may be combined with a traffic signal to recommend the speed at which drivers should drive to reach the next light at ...
A speed limit is the limit of speed allowed by law for road vehicles, usually the maximum speed allowed. Occasionally, there is a minimum speed limit. [1] Advisory speed limits also exist, which are recommended but not mandatory speeds. Speed limits are commonly set by the legislative bodies of national or local governments.
Question: Something that has not made sense to me since I started driving (49 years ago) is the apparent discrepancy in the posted speed limit (for example 50 mph) and the cautionary speed signs ...
Meanwhile, in Ireland, its recent speed limit transition from miles per hour to kilometres per hour didn't take effect until 20 January 2005, although distance road signs had already been labelled in metric since the 1970s. [7] The US territory of Puerto Rico uses a mix – speed limits are in mph but distance signs are marked in km.
The speed limit and/or a warning message will illuminate on the sign to remind the driver/rider to slow down. Another variation of VAS displays the speed of any passing vehicle. If the vehicle is moving faster than the speed limit the number will flash, or be displayed in an alternate colour.
A 2017 report by the Federal Road Research Institute reported that in 2015, 70.4% of the Autobahn network had only the advisory speed limit, 6.2% had temporary speed limits due to weather or traffic conditions, and 23.4% had permanent speed limits. [4]
The legislation required 55 mph (89 km/h) speed limits on all four-lane divided highways unless the road had a lower limit before November 1, 1973. In some cases, like the New York State Thruway, the 50 mph (80 km/h) speed limit had to be raised to comply with the law. The law capped speed limits at 55 mph (89 km/h) on all other roads. [18]
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