英语翻译In deciding whether or not to pass another vehicle,the d

英语翻译
In deciding whether or not to pass another vehicle,the driver must weigh the clear distance available to him against the distance required to carry out the sequence of events that make up the passing maneuver.Among the factors that will influence his decision are the degree of caution that he exercises and the accelerating ability of his vehicle,.Because humans differ markedly,passing practices,which depend drivers.To establish design values for passing sight distances observed the passing practices of many drivers.Basic observations on which passing sight distance standards are based were made during the period 1938-1941.assumed operating conditions are as follows:
1.The overtaken vehicle travels at a uniform speed.
2.The passing vehicle has reduced speed and trails the overtaken one as it enters the passing section.
3.When the passing section is reached,the driver requires a short period of time to perceive the clear passing section and to react to start his maneuver.
4.Passing is accomplished under what may be termed start and a hurried return in the face of opposing traffic.The passing vehicle accelerates during the maneuver and its average speed during occupancy of the left lane is 10 mph higher that of the overtaken vehicle.
5.When the passing vehicle returns to its lane there is a suitable clearance length it and an oncoming vehicle in the other lane.
The four distances,in sum ,make up passing sight distance.
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