一般轿车采用前轮驱动型式，动力有限，采用直线牵引可减少阻力

“limited“ 是修饰traction的形容词，“limited traction” 是有限的牵引力，请看下列网页。

who want limited, straight-line traction = 有限的、直线运行的牵引


Traction - Formula 1 Dictionary
www.formula1-dictionary.net/traction.html
The amount of force available is limited by the available traction. Most two-wheel-drive cars can't move if there is more than a few inches of snow on the road, because in the snow, each tire has only a small amount of traction. A four-wheel-drive car can utilize this limited traction of all four tires. Off road - In off-road conditions ...


The World's Most Fuel Efficient Vehicle: Design and Development of ...
https://books.google.com/books?isbn=3728131342
Jean Jacques Santin - 2007 - ‎Automobiles
The second constraint is the limited traction force: max FFV (11.17) traction traction car The system is described using the fundamental dynamic principles (already introduced in Equation (11.13)): 5 1 car car i i dV t M Ft dt (11.18) The final element that must be determined is the control variable (i.e., the system input). For the ...

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Note added at 8 hrs (2018-04-26 12:42:16 GMT)
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相对于经常并道、拐弯等，直线行驶需要较低的牵引力，这就是limited traction的含义。

车速过快失控的原因车主朋友要知道- 潮粉
fensi.shangc.net/p/70830
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5 days ago - 因此汽车在转弯的过程中得不到足够多的牵引力，那么汽车发生侧滑是正常的事情。所以车主朋友在转弯的时候，一定要注意控制车速。 2.直线路段发生侧滑. 我们知道在许多的直线路段也是很容易发生侧滑的。这主要是发生在一些后驱高性能车上最常见。那么又是怎么回事呢？小编就给大家细讲一下。 这种侧滑现象 ...