If L is the length of a moving vehicle and R is the radius of curve, the extra mechanical width b to be provided on horizontal curves,

• A. <img src="/_files/images/civil-engineering/highway-engineering/31-16-86-1.png">
• B. <img src="/_files/images/civil-engineering/highway-engineering/31-16-86-2.png">
• C. <img src="/_files/images/civil-engineering/highway-engineering/31-16-86-3.png">
• D. <img src="/_files/images/civil-engineering/highway-engineering/31-16-86-4.png">
• E. <img src="/_files/images/civil-engineering/highway-engineering/31-16-86-5.png">