... (30 cm); 3. whereas road humps are longer and are typically 10 to 14 feet (3.0 ... locations where very low speeds are desired and reasonable, and noise and fumes are not a major concern. ... highroad crossing, toll gate,garden, village, parking lot, and gas station, etc. 7. fixer for asphalt roads ... .,Ltd, specialized in producing railway rubber products and traffic safety products. Our range covers traffic ...