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- Determine the total stopping distance (m) for a road with speed limit of 68kph and grade of 4.7%.COURSE: Transportation Engineering QUESTION: Julia Vargas avenue in Ortigas, Pasig is classified by the DOTR as a Class I two-lane highway on level terrain with passing permitted throughout. The highway has 3.3m lanes with 1.2m shoulders. There are 9.6 access points per km. The base FFS is 96.50 kph . During the peak hour, 480 vehicles are traveling in the analysis direction and 320 vehicles are traveling in the opposing direction. If the PHF is 0.85 and there are 4% large trucks, 3% buses, and 2% recreational vehicles, what is the level of service of Julia Vargas avenue??Determine the vehicles speed if the skid mark =77feet and f=.7
- Assume that passenger car equivalents are 1.5 for trucks (ET), 1.6 for left-turns (EL), and 1.4 for right-turns (ER), and saturation flow qs= 160 x (curb-to-curb width / # of lanes) equivalent passenger-car units per hour per lane (pcu/hr/ln). Pedestrian walk speed (PS) is 4 ft/sec, and the effective width of crosswalk (WE) is 9 ft. Given that the intergreen time is 8.0 seconds and lost time is 3.5 seconds per phase, design a 2-phase signal timing plan using the Webster’s method.on a certrain stretch of track, trains run at 60kph. how far back of a stopped train should a warning torpedo be plaed to signal an on coming train in meters? asssume that the brakes are applied at once and retard the train at a uniform rate of 2 ft/s^2.The banking angle of a curved road with radius of curvature 47m, for a design speed of 760km / h .
- A truck travels along a straight, level road at the speed of 79ft/sec. when the driver is forced to apply the breaks to avoid an accident. If the truck undergoes a constant deceleration of 14ft/sec2, how far does the truck travel before coming to a complete stop?A student trying to test the braking ability of her car determined that she needed 18.5 ft more to stop her car when driving downhill on a road segment of 5% grade than when driving downhill at the same speed along another segment of 3%. Determine the speed at which the student conducted her test in kph. Use f= 0.25 Hint = 5280 ft.The peak hour factor for a traffic during rush hour is equalto 0.60 with a highest 5-min volume of 250 vehicles. The space meanspeed of the traffics is 90 kph, Compute the spacing of vehiclesin meters
- Determine the minimum stopping sight distance on a -3.5% grade for a design speed of 110kph. Coefficient of friction between tires and pavement is 0.28. Driver’s reaction time (including perception time) is 2.5 sec.A 15-ft-long, 6-ft-high rectangular tank open to the atmosphere is towed by a truck on a level road. The tank is filled with water to a depth of 5 ft. Determine the maximum acceleration or deceleration allowed if no water is to spill during towing. a)4.29 b)7.02 c)6.45 d)5.2eDetermine the PTSF in each direction for a 4.5 mi (7.2 km) two-lane highway segmentin level terrain. Traffic volumes (two-way) are 1100 veh/h. Trucks: 10%; RVs: 7%; PHF:0.97; directional split: 60/40; no passing zones: 40%.