LCV (longer combination vehicles) NN USA Law

I created this ATS map for myself. If you notice any mistakes, please post them in the comments and I will correct them when I have time.
Roads that do not exist in ATS but are used by Longer Combination Vehicles grey color.
Most States do not prescribe a difference between Rocky Mountain Doubles and Turnpike Doubles; they specify routes for different combined trailer lengths. In general a RMD has a combined trailer length between 68 and 81 feet and a TPD has a combined trailer length between 82 and 101 feet.

CTL = Combined Trailer Length
TPD = Turnpike double
RMD = Rocky mountian double
overall lenght = truck lenght + trailer lenght
*TPD in Idaho
The Idaho Transportation Department routes are categorized by their ability to handle various extra-length vehicle combinations and their offtracking allowances. TPD trailers in game configuration do not meet the regulations to drive on the roads.
Grandfathered Routes:The higher weights and length are allowed on grandfathered routes. Following are considered grandfathered routes in or through Arizona: I-15 from Nevada to Utah; U.S.-89 from 20 miles south of Utah to the Utah border; U.S.-160 from U.S.-163 to New Mexico; U.S.-163 from U.S.-160 to Utah
Grandfathered Routes: LCV combinations may operate on all Interstate System routes in Sioux City, Iowa, and its commercial zone per 49 CR 1048.101. However, the grandfather provision allows 129,000 lbs. GVW only when entering Sioux City from South Dakota or South Dakota from Sioux City. 95,000 lbs. GVW is the grandfathered limit when entering Sioux City from Nebraska or Nebraska from Sioux City.
Grandfathered Routes: The higher grandfathered weights and length are allowed on all NN routes, including Interstate highways, within a 20-mile band of the Kansas and Oklahoma borders.

https://www.fhwa.dot.gov/policy/otps/truck/wusr/chap02.cfm
https://www.bts.gov/permitted-longer-combination-vehicles-national-highway-system-2017
Arizona https://ops.fhwa.dot.gov/freight/policy/rpt_congress/truck_sw_laws/app_a.htm#az
Missouri https://ops.fhwa.dot.gov/freight/policy/rpt_congress/truck_sw_laws/app_a.htm#mo
Idaho https://lhtac.org/wordpress/wp-content/uploads/2016/12/NIATT-Route-Request-Guideprint.pdf
https://itd.idaho.gov/wp-content/uploads/2019/07/7.16.19-ExtraLengthExcessWeight129-Attachment.pdf
Iowa https://ops.fhwa.dot.gov/freight/policy/rpt_congress/truck_sw_laws/app_a.htm#ia

12.03.25 fix idaho and oregon, addet max length in ft, smal fix map
15.03.25 add text "Most States do not prescribe ........... trailer length between 82 and 101 feet."; overall lenght = truck lenght + trailer lenght
23.03.25 add Table Combined SCS Trailer Length in game
19.04.25 add road in Missouri and changed in Idaho the purple color of the roads to red because the configurations of the TPD trailers in the game do not meet the regulations to drive on the roads
Reference https://lhtac.org/wordpress/wp-content/uploads/2016/12/NIATT-Route-Request-Guideprint.pdf
https://itd.idaho.gov/wp-content/uploads/2019/07/7.16.19-ExtraLengthExcessWeight129-Attachment.pdf
27.07.25 add Grandfathered Routes Iowa

Estimated Average Daily FAF Truck Volume https://ops.fhwa.dot.gov/freight/freight_analysis/faf/faf_truck_volumes_2017/Estimated%20Average%20Daily%20FAF%20Truck%20Volume%20(1_All%20Commodities)%202017.pdf