2003 Legislation
Print Friendly

HOUSE BILL NO. 231 – MV, studded tires, dates/requiremnt


View Daily Data Tracking History

View Bill Text

View Statement of Purpose / Fiscal Impact

Text to be added within a bill has been marked with Bold and
Underline. Text to be removed has been marked with
Strikethrough and Italic. How these codes are actually displayed will
vary based on the browser software you are using.

This sentence is marked with bold and underline to show added text.

This sentence is marked with strikethrough and italic, indicating
text to be removed.

Daily Data Tracking History

H0231............................................by TRANSPORTATION AND DEFENSE
MOTOR VEHICLES - STUDDED TIRES - Amends existing law to prohibit the use of
studded tires between specified dates; to provide exceptions; to establish
weight and protrusion standards for studs in tires; and to prohibit certain
trade practices in the tire industry.
02/11    House intro - 1st rdg - to printing
02/12    Rpt prt - to Transp
02/25    Rpt out - rec d/p - to 2nd rdg
02/26    2nd rdg - to 3rd rdg
02/27    3rd rdg - PASSED - 56-10-4
      AYES -- Andersen, Barraclough, Bauer, Bedke, Bell, Bieter, Black, Block,
      Boe, Bolz, Bradford, Campbell, Cannon, Clark, Collins, Crow, Cuddy,
      Denney, Douglas, Edmunson, Ellsworth, Field(18), Field(23), Gagner,
      Garrett, Henbest, Jaquet, Jones, Lake, Langford, Langhorst, Martinez,
      McKague, Meyer, Miller, Mitchell, Moyle, Raybould, Ridinger, Ring,
      Ringo, Roberts, Robison, Rydalch, Sayler, Shepherd, Shirley, Skippen,
      Smith(30), Smith(24), Smylie, Snodgrass, Stevenson, Tilman, Wills, Wood
      NAYS -- Barrett, Eberle, Eskridge, Harwood, Kulczyk, McGeachin,
      Naccarato, Nielsen, Sali, Schaefer
      Absent and excused -- Deal, Kellogg, Trail, Mr. Speaker
    Floor Sponsor - Smith(24)
    Title apvd - to Senate
02/28    Senate intro - 1st rdg - to Transp
03/07    Rpt out - rec d/p - to 2nd rdg
03/10    2nd rdg - to 3rd rdg
03/13    3rd rdg - PASSED - 34-0-1
      AYES -- Andreason(Rouse), Bailey, Brandt, Bunderson, Burkett,
      Burtenshaw, Calabretta, Cameron, Compton, Darrington, Davis, Geddes,
      Goedde, Hill, Ingram, Kennedy, Keough, Little, Lodge, Malepeai, Marley,
      McKenzie, McWilliams, Noble, Noh, Pearce, Richardson,  Schroeder,
      Sorensen, Stegner, Stennett, Sweet, Werk, Williams
      NAYS -- None
      Absent and excused -- Gannon
    Floor Sponsor - Keough
    Title apvd - to House
03/14    To enrol
03/17    Rpt enrol - Sp signed
03/19    Pres signed
03/20    To Governor
03/26    Governor signed
         Session Law Chapter 124
         Effective: 07/01/03

Bill Text

  ||||              LEGISLATURE OF THE STATE OF IDAHO             ||||
 Fifty-seventh Legislature                 First Regular Session - 2003
                              IN THE HOUSE OF REPRESENTATIVES
                                     HOUSE BILL NO. 231
  1                                        AN ACT
  6    Be It Enacted by the Legislature of the State of Idaho:
  7        SECTION  1.  That  Section  49-948, Idaho Code, be, and the same is hereby
  8    amended to read as follows:
  9        49-948.  RESTRICTIONS AS TO TIRE EQUIPMENT. (1) Every solid rubber tire on
 10    a vehicle shall have rubber on its entire traction surface at  least  one  (1)
 11    inch thick above the edge of the flange of the entire periphery.
 12        (2)  No  person  shall  operate  or move on any highway any motor vehicle,
 13    trailer, or semitrailer having any metal tire in contact with the highway.
 14        (3)  No tire on a vehicle moved on a highway shall have on  its  periphery
 15    any  block, stud, flange, cleat, spike, or any other protuberance of any mate-
 16    rial other than rubber which projects beyond the tread of the traction surface
 17    of the tire, except as allowed herein. It shall be  permissible  to  use  farm
 18    machinery  with  tires having protuberances which will not injure the highway,
 19    and it shall be permissible to use tire chains. Tires with bBuilt-in  lugs  of
 20    tungsten carbide or other suitable material, of reasonable proportions herein-
 21    after  called  studs,  may  be  used upon any vehicle when required for safety
 22    because of snow, ice, or other conditions tending to cause a vehicle to  skid,
 23    that  will  not  unduly damage the highway, may be inserted if approved by the
 24    board. The board shall have the power to revoke any  permission  for  built-in
 25    lugs  at  any time it may determine the lugs are unduly damaging the highways.
 26    Motor vehicles, trailers and semitrailers with tires having built-in studs are
 27    prohibited on public highways between the dates of May  1  and  September  30,
 28    annually, except as provided in paragraphs (a) and (b) of this subsection:
 29        (a)  Fire pumper/tanker trucks and ladder trucks belonging to fire depart-
 30        ments and firefighting agencies are exempt from the prohibited dates.
 31        (b)  Special  exemptions  from  the prohibited dates may be granted by the
 32        Idaho transportation board if it is found by the board  that  enhancements
 33        to public safety outweigh the increased pavement wear.
 34        (4)  Commercial  tire  retailers  shall  not sell studded tires with studs
 35    exceeding the following weight and protrusion limitations after July 1,  2005.
 36    Commercial  tire  retailers  and  tire  shops shall not manually install studs
 37    exceeding the following weight and protrusion limitations after July 1, 2005.
 38        (a)  Studs shall not protrude more than six-hundredths (.06)  of  an  inch
 39        from the surface of the tire tread when originally installed.
 40        (b)  Stud size shall be as recommended by the manufacturer of the tire for
 41        the type and size of the tire.
 42        (c)  Studs  shall  individually  weigh no more than one and one-half (1.5)
 43        grams if the stud is size 14 or less.
  1        (d)  Studs shall individually weigh no  more  than  two  and  three-tenths
  2        (2.3) grams if the stud size is 15 or 16.
  3        (e)  Studs  shall  individually  weigh no more than three (3) grams if the
  4        stud size is 17 or larger.

Statement of Purpose / Fiscal Impact

                     STATEMENT OF PURPOSE

                            RS 12826C1

To control the weights of studs in winter snow tires and to control
the installation of studs in winter snow tires by commercial tire

This proposed legislation will amend Section 49-948, Idaho Code, in
an effort to reduce the amount of pavement wear caused by studded
winter snow tires by controlling the weights of studs allowed to be
installed by commercial tire shops.  This proposal would also
codify the annual period that studded snow tires are prohibited and
provide for exceptions to the prohibited period for special
vehicles and special conditions.  This proposal would eliminate the
need for Idaho Transportation Administrative Rule 39.03.46 that
currently addresses studded snow tire requirements.  That rule will
be repealed if this legislation is adopted. 

It has been proven by laboratory testing that the amount of
pavement wear as exhibited by rutting from studded tire abrasion of
a pavement is in direct proportion to the weight of the studs in
studded winter tires, every thing else being equal.  Reducing the
weights of studs to the values specified in the proposed
legislation would reduce studded tire pavement wear by half. The
lighter-weight studs would perform under winter driving conditions
about as well as the heavier weight studs now being used, according
to studies conducted in Sweden, Finland and Norway. 

Commercial tire retailers would have until July 1, 2005 to sell off
their existing inventory of heavier weight studs.  After July 1,
2005, only tires with lightweight studs could be sold.  

                         FISCAL IMPACT

If this proposal were to become law the fiscal impact on the Idaho
Transportation Department (ITD) would be favorable due to increased
pavement life. Although ITD has not attempted to quantify the added
cost of pavement wear caused by studded tires, other States have. 
As stated in the Idaho Transportation Department special report on
studded tires to the Fifty-Fifth Idaho Legislature Second Regular
Session-2000, Alaska estimated the annual cost to repair pavements
damaged by studded tires to be $5 million and Oregon estimated the
annual cost at $24 million.

Name:        Greg Laragan
Agency:      Idaho Transportation Department
Phone:       208-334-8535

Statement of Purpose/Fiscal Impact                       H 23