1997-12-22 - CC Packet - Laserfiche WebLink

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��' �� - �� r� �, � Rel�Sli uicDD vl we FU LCu apse u nunL, wluel LLX .QL aiIUIY 1 M uvlle Vll UIC 1CSUlLS LU What the Basic Speed Law, the driver must always determine the 85th percentile, This is the � S peed of • (Minnesota Statute 169.14) reduce speed to one that is reasonable for value indicating the speed under which Minnesota's speed regulations are based existing conditions and surroundings. most (85 %) drivers are travelling. SCHOOL SPEED Lnnrrs m on the same Basic Speed Law that is Experience has shown that a posted speed S CHOOL used in all 50 states: 'No p erson shall Driving faster than any of the described SCHOOL Zottes P limit near this value is the safe and reason - drive a vehicle upon n highway at a speed limits is illegal and the driver may be able speed. These can be established speed greater than is reasonable or pru- legally charged for speeding. S PEED by the local road authority dent having due regard for weather, visi- Engineering judgment is a very important LIMN on local roads in a school bility, the traffic on, and in no event at a How Does Determine tool. The traffic investigator must use zone. This regulatory speed speed which endangers the safety of per- i the Regulatory S• ' ' • knowledge of nationally accepted principles 20 limit is in effect whenever sons or property." combined with experience to assign the children are present, such The commissioner of transportation sets safe speed. WHEN as before and after school The following principles are behind this law: regulatory speed limits on state and local ARE CHILDREN PRESENT or during recess. The • Laws are created for the protection of roads based on a thorough engineering and school plate is black and P g traffic investigation. , ' • • ' yellow and the other signs the public and the curbing of unreason- able behavior, These factors are considered: REGuimoRY SPEED Umrr SFGrt are black and white. • To effectively enforce a law, the public • road type and surface This black and white sign SPEED LIMIT `sPr� Errors IN WORK Zones must I must believe that the law is reasonable. (curve, hill, etc.) shows the maximum speed ►'Advisory speed limits are • location and type of access points The Basic Speed Law recognizes that most YP that a motorist may travel P 55 used to identify safe intersections, entrances, etc, under ideal conditions. It drivers use basic common sense and will (� ) must be authorized by the speeds for specific con - usually drive at a safe and reasonable • sufficient length of roadway commissioner of transportation. ditions within a work (1/4 mile minimum) speed for existing conditions. zone. These black and EPA •existing traffic AavisoRV SPEED PLATE orange signs are always - - - , . , - - . ffic control devices used with warning signs. (signs, signals, etc.) This black and yellow speed The local road authority The law establishes the following maximum plate is used to advise 35 speed limits in Minnesota under normal dri- • accident history motorists of a comfort- can post these plates in M.P,H. ' ving conditions. These limits are in effect • traffic volume able speed to navigate work zones on local with and without signs posted: certain situations. It is roads. • 10 mph in alleys • sight distances used with a warning sign. • Work zone speed limits are short term • 30 mph in urban districts • test drive results For instance, when travel- regulatory speed limits that are estab- • 65 mph on rural interstate highways • speed study 35 ding on a winding road, lished for worker safety P the curve warning sign WORK due to traffic in adjacent (always posted with signs) The most important part of the traffic inves- would be used with an ZONE lanes. These speed limits • 55 mph in other locations tigation is the speed study. When choosing advisory speed plate. This range from 20 mph to (set in 1974 to promote energy a speed, drivers take many roadway envi- plate may be posted by the 40 mph and can be post - conservation) ronment factors into consideration. local road authority on local ed,by the local road ED Therefore, the speed that the majority of roads: SPE authority in active work However, when these speed limits are not people consider prudent is an important LIMIT zones on local roads. appropriate, the commissioner of trans- value. Data is collected by performing radar �� The work zone plate is portation may authorize the posting of other checks at selected locations on the road- black and orange and regulatory speed limit signs if requested. way under ideal driving conditions. A tech- the speed limit sign is black and white.