RECENT PROBLEMS ON STUDDED TIRES AND PAVEMENT CHARACTERISTICS

Effects of Studded Tires on Pavement Wear and Traffic Safety

IN T R O D U C T IO N The question of whether the use of metal studs in automobile tires should be permitted as an aid to winter driving has been a highly controversial issue in Minnesota for a number of years. The state leg­ islature in biennial sessions had legalized their use on Minnesota roads and streets for six successive winters from October 1965 through May 1971. But during its last ses...

Effects of Studded Tires on Pavements in Minnesota

During the period of the past five winters in Minnesota, we have witnessed a startling increase in the amount of surface wear in the wheel tracks on many pavements—both bituminous and Portland cement concrete. Previously when similar pronounced surface abrasion occurred it was generally related to some deficiency such as unfavorable con­ struction conditions or materials or mixture design that ...

[Particle numbers in classified sizes of roadside dust caused by studded tires in the air at different heights from the pavement surface].

Increased use of motor vehicles has produced various risks to human health due to air pollution by noxious gases, heavy metals and roadside dust. Since the late 1970s, the wide spread use of studded tires for cars has caused pavement wear, resulting in not only economic losses, but also roadside air pollution in cold and snowy regions in Japan. The most serious environmental problem in Sapporo,...

Using Pyrolized Carbon Black from Waste Tires in Asphalt Pavement

Measuring and Analyzing Pavement Texture Concrete Pavement Surface Characteristics Program

Introduction Pavement texture is defined by the irregularities on a pavement surface that deviate from an ideal, perfectly flat surface. As shown in Figure 1, the World Road Association (PIARC) has established standard categories of texture, classified by wavelength. These categories include microtexture (wavelengths up to 0.5 mm), macrotexture (0.5 to 50 mm), megatexture (50 to 500 mm), and ro...