Section R307-307-6 - Exemptions(1) In the interest of public safety, any person who applies an abrasive such as crushed slag or sand to arterial roadways because salt alone would not ensure safe driving conditions due to steepness of grade or extreme weather is exempt from the requirements in R307-307-4.(2) The following roads are specifically excluded from the requirements of R307-307-5(1): (b) the portion of Interstate 15 near Point of the Mountain;(c) I-15, from Exit 385 northward to the Idaho Border;(d) I-84 from Exit 17 eastward to Exit 40 at Tremonton;(e) SR-39 from Harrison Boulevard eastward into Ogden Canyon;(f) I-84 from the junction with US-89 eastward into Weber Canyon;(g) I-80 near Black Rock, from the junction with SR-36 to the junction with SR-202;Utah Admin. Code R307-307-6