slide1 l.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Donald E. Howe, P.E. Division of Traffic Operations California Department of Transportation PowerPoint Presentation
Download Presentation
Donald E. Howe, P.E. Division of Traffic Operations California Department of Transportation

Loading in 2 Seconds...

play fullscreen
1 / 18

Donald E. Howe, P.E. Division of Traffic Operations California Department of Transportation - PowerPoint PPT Presentation


  • 223 Views
  • Uploaded on

Donald E. Howe, P.E. Division of Traffic Operations California Department of Transportation. Minimum Sign Retroreflectivity Requirements N ew federal Regulatory Standard in the Manual on Uniform Traffic Control Devices (MUTCD) Rev. # 2. Why Do We Install Signs?.

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about 'Donald E. Howe, P.E. Division of Traffic Operations California Department of Transportation' - libitha


An Image/Link below is provided (as is) to download presentation

Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author.While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.


- - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript
slide1

Donald E. Howe, P.E.Division of Traffic OperationsCalifornia Department of Transportation

Minimum Sign Retroreflectivity RequirementsNew federalRegulatory Standard in the Manual on Uniform Traffic Control Devices (MUTCD) Rev. # 2

why do we install signs
Why Do We Install Signs?

Required by MUTCD?

NO

Engineering Judgment?

YES!

Why?

To assist

road users

(including older road users)

why retroreflectivity for signs
Why Retroreflectivity for Signs?

It is the difference between night and day:

Nighttime

Daytime

night travel and crashes
Night Travel and Crashes

Source: National Safety Council

final rule
Final Rule
  • Published on Dec 21, 2007
    • Vol. 72, No. 245
  • Revision #2 of the 2003 Edition of the MUTCD
  • Effective Jan 22, 2008
new mutcd language section 2a 09 maintaining minimum retroreflectivity
“Standard:

Public agencies or officials having jurisdiction shall use an assessment or management method that is designed to maintain sign retroreflectivity at or above the minimum levels in Table 2A-3”

New MUTCD LanguageSection 2A.09 Maintaining Minimum Retroreflectivity
slide8

New MUTCD Table 2A-3

Minimum Maintained Retroreflectivity Levels

methods to maintain retro
Methods to Maintain Retro

Assessment Method

Management Methods

Assessment Methods

  • Expected Sign Life
  • Blanket Replacement
  • Control Signs
  • Future Method Based On Engineering Study
  • Combination Of Any of these
  • Visual Nighttime Inspection
    • Calibration Signs
    • Comparison Panels
    • Consistent Parameters
  • Measured Sign Retro
new mutcd language section 2a 09 maintaining minimum retroreflectivity10
“Support:

Compliance… is achieved by having a method in place and using the method to maintain the minimum levels established in Table 2A-3. Provided that… a method is being used, an agency would be in compliance… even if there are some individual signs that do not meet the… levels at a particular point in time.

New MUTCD LanguageSection 2A.09 Maintaining Minimum Retroreflectivity
exempt signs
Exempt Signs
  • Parking/Standing/Stopping
  • Walking/Hitchhiking
  • Adopt-A-Highway
  • Blue or Brown Backgrounds
  • Exclusive Use of Bikes

or Pedestrians

Note: Must still meet other

requirements in MUTCD

(inspections, retroreflective,

etc,)

compliance period from effective date of final rule mutcd revision 2 january 22 2008
Compliance Period:From “Effective” Date of Final Rule MUTCD Revision #2 (January 22, 2008):
  • 4 yrs (January, 2012)

Establish and implement method(s)

  • 7 yrs (January, 2015)

Replace identified regulatory, warning, ground-mounted guide signs (except street-name)

  • 10 yrs (January, 2018)

Replace identified street name & overhead guide signs

[ The State of California has 24 months to adopt Revision # 2 as part of CA MUTCD ]

slide15

Required Minimum Maintained Level

Prismatic

Average

E G

Super EG

High Inten

slide16

Average of Some Prismatics

High Intensity

Super EG

Required Minimum Maintained Level

EG

example of life cycle costs using invented numbers
EXAMPLE of Life/Cycle Costs(using invented numbers)
  • Assume $160 to replace a sign with EG sheeting

(substrate, sheeting, labor)

  • If so, then
    • SEG might be $164
    • HI might be $168
    • Pris might be $192
  • Cost per year might look like:

EG: $160 / 0 = Can not calculate

SEG: $164 / 7? = $23 / yr ??

HI: $168 / 12? = $14 / yr ??

Pris: $192 / 16? = $12 / yr ??

  • Add in potential cost of traffic hazard (risk mgmt)
need more information
Need More Information?
  • FHWA fhwa.dot.gov/retro
    • Summary Brochure
    • Final Rule
    • Power Point Presentations
    • Newsletter Articles
  • Texas Transportation Institute (TTI) tcd.tamu.edu
    • Research Reports
  • ATSSA www.retroreflectivity.net
    • Q & A