uestion 2: Traffic data has been collected by students at two sections, xx and yy, of a highway 90 m apart. Observations at xx show that six vehicles passed that section at intervals of 10, 6, 7, and 5 seconds, respectively. If the speeds of the vehicles were found to be 50, 45, 45, 40, 35, ad 40 km/h, respectively. 500 m 1. Draw a schematic showing the locations of the vehicles 36 s after the first vehicle passed section xx. 2. Determine the time mean speed. 3. Determine the space mean speed 1. Estimate the rate of flow on the highway

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Asphalt Binders and Mixtures

Asphalt binders are subsidiary products procured during the refining process of petroleum while manufacturing gasoline, diesel, and similar petroleum products. Asphalt binders are obtained from the residue that remains after the distillation of petroleum, this residue is further subjected to steam distillation and oxidation to remove the traces of gas oil present in the residue. Certain additives or modifiers are also added to asphalt binders to alter them to suit different applications.