Determine the distance d,. Determine the minimum distance from the exit sign to the ramp (d,) to obey the speed limit of 50 km/h at the beginning the ramp (a = 3.41 m/s? and g= 9.81 m/s²). Determine the ramp's minimum radius, R (choose proper f, value for the speed given).

1. The stopping sight distance on a curved section of a road is 500 ft. The superelevation of the curve is 4.5%. The current radius of the curve is 900 ft. What should be the design speed on the curve? (Using AASHTO tables)

A car is traveling up a 1.25% grade of a crest curve with a design speed of 65 mph. The descending grade is -2.75%. What is the required length of curve for minimum proper stopping sight distance? AASHTO Minimum Stopping Sight Distances on Level Roadways (based on braking distance) stopping sight distance design speed (mph) braking distance on level (ft) design (ft) (m) brake reaction distance calculated (km/h) (ft) (m) (m) (ft) (m) (20) (30) (40) (50) (60) (70) (80) (90) (100) (110) (120) (130) (13.9) (20.9) (27.8) (34.8) (41.7) (48.7) (55.6) (62.6) (69.5) (76.5) (83.4) (90.4) (4.6) (10.3) (18.4) (28.7) (41.3) (56.2) (73.4) (92.9) (114.7) (138.8) (165.2) (193.8) (18.5) (31.2) (46.2) (63.5) (83.0) (104.9) (129.0) (155.5) (184.2) (215.3) (248.6) (284.2) (20) (35) (50) (65) (85) (105) (130) (160) (185) (220) (250) (285) 15 55.1 21.6 76.7 80 20 73.5 38.4 111.9 115 25 91.9 60.0 151.9 155 30 110.3 86.4 196.7 200 35 128.6 117.6 246.2 250 40 147.0 153.6 300.6 305 359.8 423.8 45 165.4 194.4…

Highway problem.