ASTM F1805-06

NOTICE: This standard has either been superseded and replaced by a new version or withdrawn.
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Designation: F1805 − 06
StandardTest Method for
Single Wheel Driving Traction in a Straight Line on Snow-
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and Ice-Covered Surfaces
This standard is issued under the fixed designation F1805; the number immediately following the designation indicates the year of
original adoption or, in the case of revision, the year of last revision.Anumber in parentheses indicates the year of last reapproval.A
superscript epsilon (´) indicates an editorial change since the last revision or reapproval.
1. Scope F377PracticeforCalibrationofBraking/TractiveMeasuring
Devices for Testing Tires
1.1 This test method covers a procedure for measuring the
F538Terminology Relating to the Characteristics and Per-
driving traction of passenger car and light truck tires while
formance of Tires
traveling in a straight line on snow- or ice-covered surfaces.
F1046Guide for Preparing Artificially Worn Passenger and
1.2 This test method utilizes a dedicated, instrumented,
Light Truck Tires for Testing
four-wheel rear-wheel drive test vehicle with a specially
F1572Test Methods for Tire Performance Testing on Snow
instrumented drive axle to measure fore-aft and vertical forces
and Ice Surfaces
acting on a single driven test tire.
F1650Practice for Evaluating Tire Traction Performance
Data Under Varying Test Conditions
1.3 This test method is suitable for research and develop-
ment purposes where tires are compared during a single series
3. Terminology
of tests. They may not be suitable for regulatory statutes or
3.1 Definitions:
specification acceptance because the values obtained may not
3.1.1 candidate tire, n—a test tire that is part of a test
necessarily agree or correlate either in rank order or absolute
program. F538
traction performance level with those obtained under other
3.1.1.1 Discussion—The term “candidate object” may be
environmentalconditionsonothersurfacesorthesamesurface
used in the same sense as candidate tire.
after additional use.
3.1.2 control tire, n—a reference tire used in a specified
1.4 The values stated in SI units are to be regarded as the
manner throughout a test program. F538
standard.Ordinarily,NandkNshouldbeusedasunitsofforce.
3.1.2.1 Discussion—Acontroltiremaybeofeithertypeand
This standard may utilize kgf as a unit of force in order to
typical tire use is the reference (control) tire in Practice F1650
accommodate the use of load and pressure tables, as found in
that provides algoritms for correcting (adjusting) test data for
other standards both domestic and global that are commonly
bias trend variations (See Practice F1650).
usedwiththisstandard.Thevaluesgiveninparenthesesarefor
information only. 3.1.3 driving coeffıcient (nd), n—the ratio of the driving
force to a normal force. F538
1.5 This standard does not purport to address all of the
safety concerns, if any, associated with its use. It is the 3.1.4 driving force (F), n— of a tire, the positive longitudi-
responsibility of the user of this standard to establish appro- nalforceresultingfromtheapplicationofdrivingtorque. F538
priate safety and health practices and determine the applica-
3.1.5 grooming, v—in tire testing,mechanicallyreworkinga
bility of regulatory limitations prior to use.
snow test surface in order to obtain a surface with more
consistent properties. F538
2. Referenced Documents
2 3.1.6 ice, dry, n—smooth ice without loose surface
2.1 ASTM Standards:
materials. F538
E1136Specification for P195/75R14 Radial Standard Refer-
3.1.7 longitudinal force (F), n— of a tire, the component of
ence Test Tire
the tire force vector in the X' direction. F538
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This test method is under the jurisdiction of Committee F09 on Tires and is the
3.1.8 longitudinal slip velocity (L/T), n— the effective
direct responsibility of Subcommittee F09.20 on Vehicular Testing.
rolling radius multiplied by the difference between the spin
Current edition approved Dec. 1, 2006. Published December 2006. Originally
velocity (in rad/unit time) of a driven or braked tire and that of
approved in 1997. Last previous edition approved in 2000 as F1805–00. DOI:
afreerollingtirewheneachistravelinginastraightline. F538
10.1520/F1805-06.
2
For referenced ASTM standards, visit the ASTM website, www.astm.org, or
3.1.9 reference tire, n—a special tire included in a test
contact ASTM Customer Service at service@astm.org. For Annual Book of ASTM
program;thetestresultsforthistirehavesignificanceasabase
Standards volume information, refer to the standard’s Document Summary page on
the ASTM website. value or internal benchmark. F538
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F1805 − 06
3.1.10 snow, hard pack, n— in tire testing, packed base wheelwhilemaintainingthevehiclespeedbyapplyingbraking
without loose s
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