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2011 Interpretation Letters
 
December 2011
November 2011
Date   Item  
11/30/11   Response to request to amend Experiment 9-107 such that data will be collected at two intersection approaches: the northbound approach of Forum Boulevard at Stadium Boulevard, and the eastbound approach of Stewart at Providence Road. To read the orginal request, click here.  
11/30/11   Response to a request for approval to use Rectangular Rapid Flashing Beacons at pedestrian crosswalks on roads under the jurisdiction of the city and county of Honolulu. To read the original request, click here.  
 11/30/11   Response to a request for approval to use green colored pavement in marked bike lanes and bike lane extensions in the city of Louisville and Jefferson County.  
 11/30/11   Response to a request for approval to use Rectangular Rapid Flashing Beacons on a blanket basis at uncontrolled pedestrian and school crosswalk locations statewide in Vermont, including state highways and all local jurisdictions. To read the original request, click here.  
11/25/11   Response to a letter from Rep. Bob Goodlatte on behalf of a constituent regarding the national standards for retroflective stripes on traffic gates.  
11/21/11   Response to a request for approval to use green colored pavement in marked bike lanes and extensions of marked bike lanes on the state highway system in Florida. To read the original request, click here.  
       
11/21/11   Response to a letter requesting approval to use green colored pavement in marked bike lanes and extensions of marked bike lanes statewide in Vermont, including State highways and all local jurisdictions' roadways. To read the original request, click here.  
11/15/11   Response to a request to experiment with bicycle signal heads at three intersections in Denver with a new pavemeny marking pattern featuring chevrons for directing bicyclists across an intersection. To read the original request, click here.  
 11/10/11   Response to a request to use alternative Electric Vehicle Charging General Services symbol signs on all highways in Maryland.  
11/03/11   Response to a request for approval to use alternative Electric Vehicle Charging General Services symbol signs on all highways in Illinois, including all local jurisdictions.  
October 2011
September 2011
August 2011
   Date    Item
  08/26/2011   Response to a request for approval to use green colored pavement in marked bike lanes and bike lane extensions vitywide in the city of Asheville, N.C. To read the original request, click here.
  08/18/2011   Response to a request to use green colored pavement in marked bike lanes campus-wide at the U of Minnesota. To read the original request, click here.
  08/17/2011   Response to a request to experiment with bike boxes on Pleasant Street SE at its intersections with University Avenue SE and with Pillsbury Drive SE.  To read original request, click here.
  08/10/2011   Response to a request to use Rectangular Rapid Flashing Beacons on a blanket basis at uncontrolled pedestrian and school crosswalk locations statewide in California. To read the original request,click here.
  08/10/2011   Response to a request for approval to use alternative Electric Vehicle Charging General Services symbol signs on all highways in California. To read original request,click here.
  08/08/2011   Response to a request for conceptual approval to experiment with the addition of a yellow LED border to a standard pedestrian signal head to enhance motorist awareness of the presence of a pedestrians crossing at signalized intersection. To read the original request, click here.
  08/08/2011   Response to a request for interpretation regarding the use of red clerance intervals in the display sequence of a Pedestrian Hybrid Beacon. To read the original request, click here.
   08/03/2011   Response to a request for approval to use Rectangular Rapid Flashing Beacons on a blanket basis at crosswalks on uncontrolled approaches on city-maintained roads in the city of Appleton, Wisc. To read the original request, click here.
July 2011
June 2011
  Date   Item
   06/29/11   Response to a request for approval for the use of Rectangular Rapid Flashing Beacons on a blanket basis at crosswalks across uncontrolled approaches on city-maintained roads in the city of Coachella, Calif. To read the original resonspe, click here.
   016/29/11   Response to a request for approval for the use of Rectangular Rapid Flashing Beacons at crosswalks and uncontrolled approaches on roads under the jurisdiction of Douglas County, Ga. To read the original request, click here.
   06/23/11   Response to a request for approval for the use of Rectangular Rapid Flashing Beacons at crosswalks and uncontrolled approaches on roads under the jurisdiction of DeKalb County, Ga. To read the original request, click here.
   06/29/11   Response to a request for approval to use Rectangular Rapid Flashing Beacons on a blanket basis at uncontrolled pedestrian and school crosswalk locations statewide in Utah, including state highways and all local jurisdictions' roadways. To read the original request, click here.
   06/29/11   Response to a request for approval for the use of green colored pavement in marked bike lanes and extension of bike lanes statewide in Oregon, including state highways and all local jurisdiction's roadways. To read the original request, click here.
   06/29/11   Response to a request for approval to use Traffic Signal Photo Enforced signs on state-maintained highways in Washington state. To read the original request, click here.
   06/29/2011   Response to a request for approval to use Traffic Signal Photo Enforced signs on state-maintained highways in New York. To read the original request, click here.
  06/29/11   Response to a request for an official interpretation on the maximum mounting height for flashing warning beacons mounted over the roadway. For more background, click here.
  06/17/11   Response to a request to experiment with lowered Wrong Way and Do Not nter signing in an attempt to increase safety by reducing the instances of wrong way driving on exit ramps onto a higway. To read the original request, click here.
  06/16/1   Response to a request for approval to use Rectangular Rapid Flashing Beacons at two locations in the city of West Jordan, Utah. To read the original request, click here.
  06/16/11   Response to a request for approval to use Rectangular Rapid Flashing Beacons at two locations in the city of Orem, Utah. To read the original request, click here.
  06/14/11   Response to a request for approval to use Rectangular Rapid Flashing Beacons on a blanket basis at crosswalks across uncontrolled approaches on roadways under the jurisdiction of the city of Richmond. To read the original request, click here.
  06/09/2011   Response to reuqest for approval to use green colored pavement in marked bike lanes on Bayshore Drive from Thomasson Drive to U.S. 41 in Naples, Fla. To read the original request, click here.
  06/03/2011   Response to request for approval to use alternative electric vehicle general services symbol signs on all highways in Washington. To read the original request, click here.
  06/03/2011   Response to request for approval to use green colored pavement in marked bike lanes and bike lane extensions citywide in San Luis Obispo. To read the original request, click here.
   06/01/2011   Response to request to experiment with the use of symbolic versions of the WAIT ON STOP and GO ON SLOW signs that are used with STOP/SLOW Automated Flagger Assistance Devices.
  06/01/2011   Response to a request for an interpretation regarding the operation of temporary traffic control signals at haul road crossings and whether the use of an actuated signal at a haul road crossing would comply with the requirements given in Note 7 of Typical Application 14.
May 2011
April 2011
  Date   Item
  04/22/2011   Response to request to use Rectangular Rapid Flashing Beacons at one location on a county-maintained road in Crystal Lake, Ill. To read the original request, click here.
  04/11/2011   Response to request for approval to use Rectangular Rapid Flashing Beacons on a blanket basis on county-maintained roads in Kitsap County, Wash. To read the original request, click here.
  04/11/2011   Response to request to use Rectangular Rapid Flashing Beacons on a blanket basis at uncontrolled crosswalks on roadways under the jurisdiction of the Virginia Department of Transportation. To read the original request, click here.
  04/08/2011   Response to request to experiment with green bicycle lane markings along Arthur Avenue, Maurice Avenue, 5th Street and 6th street and a bicycle box on the southbound approach of Arthur Avenue at 6th Street in the city of Missoula. To read the original request, click here.
  04/04/2011   Response to request to use Rectangular Rapid Flashing Beacons on a blanket basis on city-maintained streets in Fort Collins. To read the original request, click here.
  04/04/2011   Response to a request for an extension and modification of an experiment with purple pavement marking dots to guide E-Z Pass transponder holders into dedicated transponder lanes at Fort McHenry Tunnel on I-95 in Maryland. To read the original request, click here.
  04/04/2011   Response to request revise national standards for traffic signals to require backlighting, a reflective frame around the signal face or other measures to provide a locational point of reference within the signal face for which indication is lit at any given time. To read the original request, click here.
March 2011
  Date   Item
  03/29/2011   Response to request to use traffic signal photo enforced signs on state maintained highways in Missouri. To read the original request, click here.
  03/29/2011   Response to revised request to experiment with a bike traffic signal face in Ashland at the intersection of Ashland Street (SR 66) and the southbound Interstate 5 ramps at exit 14. To read the original request, click here.
  03/29/2011   Response to request to experiment with colored bike boxes at seven intersections along George Street and Crown Street in downtown New Haven.  To read the original request, click here.
  03/29/2011   Response to request to experiment with lane narrowing and a series of converging chevron markings for speed reduction approaching an intersection in St. Louis County, Minn. To see the original request, click here.
  03/23/2011   Response to interim report on the use of color pavement for exclusive bus lanes to increase visibility and prominence and further discourage use of such lanes by non-authorized vehicles. To read the original report, click here.
  03/23/2011   Response to request to use Rectangular Rapid Flashing Beacons on a blanket basis at uncontrolled pedestrian and school crosswalk locations statewide in Ohio, including state highways and all local jurisdictions' roadways. To read the original request, click here.
  03/23/2011   Response to request to use Rectangular Rapid Flashing Beacons on a blanket basis at uncontrolled crosswalks on roadways under the jurisdiction of the Hawaii Department of Transportation. To read the original request, click here.
  03/23/2011   Response to request to use Rectangular Rapid Flashing Beacons on a blanket basis at uncontrolled crosswalks on city-maintained roads in the city of Cedar Hill. To read the original request, click here.
  03/11/2011   Response to request to with Circular Rapid Flashing Beacons at an uncontrolled crosswalk at the corner of Santa Monica Boulevard and Princeton Street in the City of Santa Monica. To read the original request, click here.
  03/11/2011   Response to request to use Rectangular Rapid Flashing Beacons (RRFB) on a blanket basis at uncontrolled crosswalks on city-maintained roads in the city of Santa Monica, CA. To read the original request, click here.
February 2011
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