The Laws of Physics . The man-made laws we have discussed so far, can be good or even unreasonable. They also need police enforcement, a judge and jury to convict. Natural laws that control our universe, need no police or courts, they will enforce themselves. . Stay within the law.
a. Asphalt. Most roads. b. Concrete. Many freeways, lasts longer and has better traction, especially when wet.c. Gravel. Not good for much.d. Dirt. Even worse.
Slide #9 explained the traction of these types of roads.