2008 Experimentation/Interpretation Letters

August 2008
	Date			Item
	08/27/08			Response to request for approval to experiment with Rectangular Rapid Flashing Beacons at two locations in Henderson, Nev.
	08/26/08			Response to request for approval to experiment with Rectangular Rapid Flashing Beacons at two locations in North Las Vegas, Nev.
	08/26/08			Response to Request for approval to experiment with Rectangular Rapid Flashing Beacons in Clark County, Nev.
	08/26/08			Response to Request for approval to experiment with Rectangular Rapid Flashing Beacons at three locations in Las Vegas, Nev.
	08/25/2008			Request for official interpretation of 2003 MUTCD regarding use of channelizing lines in Albany, N.Y.
	08/18/08			Request for approval to use flashing yellow arrow for permissive left turns in San Antonio, Texas
	08/18/08			Request for official interpretation of an Option Statement contained in Sections 4C.02, 4C.03 and 4C.04 of the MUTCD - Vienna, Va.
	08/18/2008			Request for approval to use Flashing Yellow Arrow Display for Permissive Left Turns on a blanket basis in Boulder, Colo.
	08/18/2008			Request for approval to use retroreflective yellow borders on traffic signal backplates on State Highways in Louisiana.
	08/13/2008			Response to a letter regarding an idea for marking median islands at wide intersections in Minnesota

July 2008
	Date			Item
	07/30/08			Request for a change of schedule for official experiment 2-496(E) - Driver's Alert Sign
	07/22/08			Request for approval to use Rectangular Rapid Flashing Beacons on a blanket basis on roadways under the jurisdiction in the city of St. Petersburg, Fla.
	07/22/08			Request for interim approval for the optional use of Rectangular Rapid Flashing Beacons
	07/22/08			Request for approval to use the RV Friendly symbol on Specific Service Signs
	07/16/08			Memorandum regarding “MUTCD – Interim Approval for Optional Use of Rectangular Rapid Flashing Beacons (IA-11)”
	07/08/08			Response to a request to experiment with High Intensity Activated Crosswalk Pedestrian Crossing Beacons at a Colorado roundabout.
	07/01/08			Response to a request for formal approval to participate in the use of Clearview fonts on State highways in Delaware.

June 2008 Date Item 6/30/08 Response to a proposal that the national standards for traffic signals be changed to require the green light to flash for 15 seconds before turning yellow. 06/19/08 Request for approval to use the flashing yellow arrow display for permissive left turns on a blanket basis on roadways under the jurisdiction of the Lexington-Fayette Urban County Government (Kentucky). 06/16/08 Request for approval to experiment with colored pavement markings - "bike boxes" - and special signs for bicycle lanes at various intersections in Portland, Ore. 06/16/08 Response to a request for approval to use the flashing yellow arrow display for permissive left turns on a blanket basis on roadways under the jurisdiction of Carrollton, Texas. 06/09/09 Response to an e-mail requesting various changes in Chapter 4F and 4D of the MUTCD regarding the application of emergency-vehicle traffic signals, the signal displays used for these devices, and signal displays for T-intersections with a right-turn-only stem. 06/09/08 Request to approve an experiment with the use of flashing yellow arrow traffic signal displays for two permissive right-turn movements at a Marin County, Calif. intersection.  06/06/08 Response to a letter requesting experimentation with a combination word-and-symbol message sign encouraging passenger vehicles to employ safe passing maneuvers around commercial trucks. 6/04/08 Response to Request to experiment with Cooperative Intersection Collision Avoidance Systems-Stop Sign Assist (CICAS-SSA) in Minnesota. 6/04/08 Memorandum requesting approval to use Automated Flagger Assistance Devices (AFTD) in Colorado.

May 2008
	Date			Item
	5/23/08			Response to a letter requesting approval to use retroreflective yellow borders on traffic signal backplates statewide in Florida.
	5/23/08			Response to a letter requesting permission to experiment with High Intensity Activated Crosswalk (HAWK) Pedestrian Crossing Beacons at up to 13 locations in the city of Alexandria, Va.
	5/22/08			Response to a letter requesting permission to experiment with retroreflective orange flags in work zones.
	5/22/08			Response to a letter seeking clarification on the requirements for news media to wear high visibility garments while covering incidents on the highway system.
	5/20/08			Request to experiment with a motorcycle symbol warning plaque in Temporary Traffic Control zones with grilled or mixed pavements.
	5/19/08			Response to the final report for officially approved experimentation 2-548(E) - Arizona Rental Car Symbol study dated Dec. 7, 2007.
	5/14/08			Request for interpretation of Section 5A.01 of the MUTCD regarding the determination of whether a facility meets the criteria to be considered a low-volume road based on Annual Average Daily Traffic (AADT).
	5/13/08			Request for approval to expand the scope for approved experiment 2-613(E) - Emergency Vehicle Alert System (EVAS) - for signalized intersections.
	5/09/08			Request for approval to experiment with steady red in-roadway lights along the stop lines at five intersections in the city of Los Angeles along light rail lines.
	5/09/08			Response to a request to experiment with High Intensity Activated Crosswalk (HAWK) Pedestrian Crossing Beacons at two locations in Santa Ana, Calif.
	5/09/08			Request for approval to use the flashing yellow arrow display for permissive left turns on a blanket basis citywide in Scottsdale, Ariz.
	5/09/08			Request for approval to use the flashing yellow arrow display for permissive left turns on a blanket basis in Virginia.
	5/07/08			Request for approval to use the RV Friendly symbol on specific service signs.

April 2008
	Date			Item
	4/30/08			Request for approval to use the flashing yellow arrow display for permissive left turns on a blanket basis citywide in Santa Clarita, Calif.
	4/30/08			Request for approval to use the flashing yellow arrow display for permissive left turns on a blanket basis citywide in Aurora, Colo.
	4/15/08			Request for approval to experiment with a series of colored pavement markings that create the illusion of being three-dimensional to attempt to reduce speeds and improve safety on various residential streets in Philadelphia, Pa.
	4/15/08			Response to a request for approval to use the RV Friendly symbol on Specific Service Signs.
	4/15/08			Response to a letter containing comments in support of a request from the city of Portland, Ore. for approval of experimentation with colored bike lanes and "bike boxes."

March 2008
	Date			Item
	3/31/08			Response to a letter requesting approval to experiment with a band of non-retroreflective colored pavement across the full traveled way width in three locations in Kansas, with the purpose of providing additional warning to road users.
	3/31/08			Response to a letter that provides a progress report and requests approval to modify the list of locations for approved experiment 4-319(E) with HAWK Pedestrian Crossing Beacons in Charlotte, N.C.
	3/31/08			A letter requesting a change in Section 4E.07 of the MUTCD to allow a pedestrian countdown to be displayed during the pedestrian walk interval, as well as during the pedestrian change interval.
	3/31/08			Response to a letter requesting approval to use the flashing yellow arrow display for permissive left turns on a blanket basis citywide in Fort Collins, Colo.
	3/31/08			Response to a letter requesting a change to the MUTCD to add a plaque which graphically indicated which approaches are controlled by STOP signs.
	3/31/08			Response to a letter transmitting information and "before" crash data for the condition prior-to installation of flashing yellow arrow indications for protected-permissive left-turn movements at a wide-medium intersection in Lafayette, La.
	3/26/08			Request for formal approval for the N.D.-DOT to participate in the use of Clearview fonts on state highways in accordance with FHWA Interim Approval
	3/24/08			Request for permission to experiment with High Intensity Activated Crosswalk Pedestrian Crossing Beacons at a midblock location in Boise, Idaho
	3/18/08			Response to request to experiment with a Bicycle-Motor Vehicle Symbol Warning sign, and SHARE THE ROAD word message plaque.
	3/14/08			Response to request to expand an experiment in which bicycle signal heads would be removed and replaced with countdown signal indications appended to the pedestrian signals.
	3/10/08			Request to experiement with High Intensity Activated Crosswalk (HAWK) Pedestrian Crossing Beacons for a pedestrian crossing in Suwanee, Ga.
	3/7/08			Request to experiment with shared-lane symbol pavement markings on several streets in Bethlehem, Pa.
	3/5/08			Request for interim approval for the Wash.-DOT to implement the option of displaying up to 12 logo panels for any one specific service type by using no more than two specific service signs in accordance with FHWA's interim approval.
	3/5/08			Request for interim approval for Wash.-DOT to implement the option of displaying up-to 12 logo panels for any one specific service type by using no-more-than two Specific Service Signs.

February 2008
	Date			Item
	2/28/08			Response to a letter with concerns regarding the section of the MUTCD that deals with Trail Signs.
	2/28/08			Response to a request to expand the scope of the experimentation for the Emergency Vehicle Alert System for Signalized Intersections to additional Michigan intersections.
	2/28/08			Letter requesting interim approval for Penn.-DOT to implement the option of displaying up-to 12 logo panels for any one specific service type by using no-more-than two Specific Service Signs.
	2/28/08			Letter requesting approval to experiment with fishhook-shaped arrows on lane use control signs and pavement markings for roundabout approaches.
	2/26/08			Request for official interpretation of the MUTCD regarding placement of parking signs for persons with disabilities.
	2/26/08			Follow-up letter regarding the addition of warning signs for "Autistic Child Area" or "Handicap Child Area" to the MUTCD.
	2/26/08			Request to experiment with shared-lane symbol pavement markings on two segments of Marion Ave., in Spartanburg, S.C.
	2/22/08			Request for official interpretation of the MUTCD regarding the proper color of delineators used to mark the location of storm drain flared ends within the highway right of way.

January 2008
	Date			Item
	1/31/2008			Request for interpretation regarding the use of LEDs in regulatory and warning signs marketed under the TAPCO name of BlinkerSign.
	1/31/2008			Request for interpretation regarding the use of light emitting diodes (LEDs) in regulatory and warning signs and a request to change/add additional language to the MUTCD to clarify the current language for the application of LEDs.
	1/29/2008			Request for approval to use the flashing yellow arrow display for permissive left turns on a blanket basis citywide in Chubbuck, Idaho.
	1/29/2008			Response to a letter requesting permission to experiment with shared-lane symbol pavement marking on various streets in Columbia, MO.
	1/29/2008			Response to a request to use the flashing yellow arrow display for permissive left turns on a blanket basis citywide in La Habra, Calif.
	1/17/2008			Response to a letter asking the FHWA to include optional signs in the MUTCD for an approach to a traffic signal controlled intersection which faces a red signal while an opposing approach has an advance green or green arrow turn displayed (Bethlehem, PA).
	1/8/2008			Request for official interpretation of the MUTCD regarding the meaning of a solid white lane line as it applies to a specific intersection approach where a motor vehicle crash occured (Green Bay, WI).