An 8-lane basic freeway segment (bfs) is on rolling terrain. it has 12 ft lanes with a 4 ft right shoulder. there are 7 ramps within the 6-mile segment of interest. the directional peak traffic volume is 5200 veh/hr with 6% trucks and 2% buses. there is no recreational vehicle. the traffic stream consists of regular users and the peak hour factor (phf) is 0.90. calculate the free-flow speed (ffs), analysis flow rate vp, and determine the level of service (los).

Ajournal bearing has a journal diameter of 3.250 in with a unilateral tolerance of 20.003 in. the bushing bore has a diameter of 3.256 in and a unilateral tolerance of 0.004 in. the bushing is 2.8 in long and supports a 700-lbf load. the journal speed is 900 rev/min. find the minimum oil film thickness and the maximum film pressure for both sae 20 and sae 20w-30 lubricants, for the tightest assembly if the operating film temperature is 160°f. a computer code is appropriate for solving this problem.