The following words and phrases when used in this chapter shall, for the purpose of this chapter, have the meanings respectively ascribed to them.
A vehicle covered under this subsection, if it otherwise qualifies, may be operated as special mobile equipment and under such circumstances this subsection shall not be applicable to such vehicle, and such vehicle shall not be required to comply with sections 321.384 through 321.423, when such vehicle is moved during daylight hours; however, the provisions of section 321.383 shall remain applicable to such vehicle.
Wherever the word "trailer" is used in this chapter, same shall be construed to also include "Semitrailer".
A "Semitrailer" shall be considered in this chapter separately from its power unit.
Iowa Code § 321.1
82 Acts, ch 1062, §1, 2, 38; 83 Acts, ch 9, §3, 8; 83 Acts, ch 24, §1, 12; 84 Acts, ch 1219, §21; 84 Acts, ch 1252, §1; 84 Acts, ch 1292, §2; 85 Acts, ch 21, §41; 85 Acts, ch 35, §1, 2; 85 Acts, ch 37, §1; 85 Acts, ch 40, §1; 86 Acts, ch 1056, §1; 86 Acts, ch 1071, §1; 86 Acts, ch 1210, §1, 2; 86 Acts, ch 1237, §19; 86 Acts, ch 1238, §13; 87 Acts, ch 170, §2 -4; 87 Acts, ch 186, §1, 2; 87 Acts, ch 189, §1; 88 Acts, ch 1047, §1; 88 Acts, ch 1083, §1, 2; 89 Acts, ch 34, §1; 89 Acts, ch 83, §40, 41; 89 Acts, ch 118, §1; 90 Acts, ch 1183, §3; 90 Acts, ch 1230, §6 - 14; 91 Acts, ch 56, §1; 91 Acts, ch 219, §14; 92 Acts, ch 1048, §1; 92 Acts, ch 1104, §1; 92 Acts, ch 1175, §19, 28; 93 Acts, ch 114, §1; 93 Acts, ch 139, §7; 94 Acts, ch 1087, §1; 95 Acts, ch 10, §1; 95 Acts, ch 55, §1, 2; 95 Acts, ch 56, §1; 95 Acts, ch 118, §1, 2; 96 Acts, ch 1005, §1; 96 Acts, ch 1129, §113; 97 Acts, ch 100, §1; 97 Acts, ch 104, §5; 97 Acts, ch 108, §1, 2; 97 Acts, ch 139, §1, 17, 18; 97 Acts, ch 148, §7, 9; 98 Acts, ch 1073, §1 - 4; 98 Acts, ch 1075, §20; 98 Acts, ch 1121, §8; 99 Acts, ch 13, §1 -3, 29; 99 Acts, ch 108, §1 -3; 99 Acts, ch 188, §1; 2000 Acts, ch 1005, §1; 2000 Acts, ch 1016, §1; 2000 Acts, ch 1025, §1, 6; 2000 Acts, ch 1133, §1; 2001 Acts, ch 32, §15; 2001 Acts, ch 132, §1; 2001 Acts, ch 153, §15, 17; 2001 Acts, ch 176, §80; 2002 Acts, ch 1063, §17, 18; 2003 Acts, ch 6, § 1; 2003 Acts, ch 24, § 2; 2004 Acts, ch 1013, § 1, 35; 2004 Acts, ch 1132, § 80; 2004 Acts, ch 1175, § 397, 400; 2005 Acts, ch8, §2, 3; 2005 Acts, ch 20, §4; 2006 Acts, ch 1068, §6, 7, 41; 2008 Acts, ch 1018, §1 -3; 2008 Acts, ch 1021, §1 -4; 2008 Acts, ch 1032, §106; 2008 Acts, ch 1044, §1 - 4, 8; 2008 Acts, ch 1113, §2, 11, 38; 2009 Acts, ch 90, § 1; 2009 Acts, ch 130, § 20; 2010 Acts, ch 1035, §1; 2010 Acts, ch 1061, § 111; 2010 Acts, ch 1186, §3; 2011 Acts, ch 38, §2; 2012 Acts, ch 1013, § 1, 2; 2012 Acts, ch 1093, § 1; 2013 Acts, ch 37, § 1; 2013 Acts, ch 103, § 2 - 4, 21; 2014 Acts, ch 1023, §1; 2014 Acts, ch 1027, §1; 2014 Acts, ch 1127, §4, 5; 2015 Acts, ch 29, § 114; 2015 Acts, ch 72, § 1, 4; 2015 Acts, ch 123, § 31, 44; 2016 Acts, ch 1073, § 101; 2016 Acts, ch 1098, §1, 2; 2016 Acts, ch 1101, §1, 24; 2017 Acts, ch 84, § 1; 2018 Acts, ch 1010, § 1; 2018 Acts, ch 1022, § 1; 2018 Acts, ch 1095, § 1; 2019 Acts, ch 59, § 90; 2019 Acts, ch 67, §1, 20; 2019 Acts, ch 138, §1; 2019 Acts, ch 146, §1; 2020 Acts, ch 1063, § 145; 2020 Acts, ch 1089, §3; 2021 Acts, ch 33, §1 - 3; 2021 Acts, ch 119, §1; 2021 Acts, ch 125, §2 - 4; 2023 Acts, ch 19, § 1055, 2507; 2023 Acts, ch 66, §67
82 Acts, ch 1062, §1, 2, 38; 83 Acts, ch 9, §3, 8; 83 Acts, ch 24, §1, 12; 84 Acts, ch 1219, §21; 84 Acts, ch 1252, §1; 84 Acts, ch 1292, §2; 85 Acts, ch 21, §41; 85 Acts, ch 35, §1, 2; 85 Acts, ch 37, §1; 85 Acts, ch 40, §1; 86 Acts, ch 1056, §1; 86 Acts, ch 1071, §1; 86 Acts, ch 1210, §1, 2; 86 Acts, ch 1237, §19; 86 Acts, ch 1238, §13; 87 Acts, ch 170, §2 - 4; 87 Acts, ch 186, §1, 2; 87 Acts, ch 189, §1; 88 Acts, ch 1047, §1; 88 Acts, ch 1083, §1, 2; 89 Acts, ch 34, §1; 89 Acts, ch 83, §40, 41; 89 Acts, ch 118, §1; 90 Acts, ch 1183, §3; 90 Acts, ch 1230, §6 - 14; 91 Acts, ch 56, §1; 91 Acts, ch 219, §14; 92 Acts, ch 1048, §1; 92 Acts, ch 1104, §1; 92 Acts, ch 1175, §19, 28; 93 Acts, ch 114, §1; 93 Acts, ch 139, §7; 94 Acts, ch 1087, §1; 95 Acts, ch 10, §1; 95 Acts, ch 55, §1, 2; 95 Acts, ch 56, §1; 95 Acts, ch 118, §1, 2; 96 Acts, ch 1005, §1; 96 Acts, ch 1129, §113; 97 Acts, ch 100, §1; 97 Acts, ch 104, §5; 97 Acts, ch 108, §1, 2; 97 Acts, ch 139, §1, 17, 18; 97 Acts, ch 148, §7, 9; 98 Acts, ch 1073, §1 - 4; 98 Acts, ch 1075, §20; 98 Acts, ch 1121, §8; 99 Acts, ch 13, §1 - 3, 29; 99 Acts, ch 108, §1 - 3; 99 Acts, ch 188, §1; 2000 Acts, ch 1005, §1; 2000 Acts, ch 1016, §1; 2000 Acts, ch 1025, §1, 6; 2000 Acts, ch 1133, §1; 2001 Acts, ch 32, §15; 2001 Acts, ch 132, §1; 2001 Acts, ch 153, §15, 17; 2001 Acts, ch 176, §80; 2002 Acts, ch 1063, §17, 18; 2003 Acts, ch 6, §1; 2003 Acts, ch 24, §2; 2004 Acts, ch 1013, §1, 35; 2004 Acts, ch 1132, §80; 2004 Acts, ch 1175, §397, 400; 2005 Acts, ch 8, §2, 3; 2005 Acts, ch 20, §4; 2006 Acts, ch 1068, §6, 7, 41; 2008 Acts, ch 1018, § 1 - 3; 2008 Acts, ch 1021, §1 - 4; 2008 Acts, ch 1032, §106; 2008 Acts, ch 1044, §1 - 4, 8; 2008 Acts, ch 1113, §2, 11, 38; 2009 Acts, ch 90, §1; 2009 Acts, ch 130, §20; 2010 Acts, ch 1035, §1; 2010 Acts, ch 1061, §111; 2010 Acts, ch 1186, §3; 2011 Acts, ch 38, §2; 2012 Acts, ch 1013, §1, 2; 2012 Acts, ch 1093, §1
Referred to in §123.48, 142D.2, 159A.11, 214A.32, 308A.1, 321.20B, 321.24, 321.56, 321.105A, 321.121, 321.126, 321.234A, 321.235A, 321.235B, 321.260, 321.285, 321.373, 321.471, 321.474, 321.486, 321A.1, 321A.32, 321E.7, 321E.14, 321E.34, 321G.9, 321G.20, 321G.24, 321I.7, 321I.21, 321J.6, 321J.8, 321N.3, 321O.1, 321O.2, 321O.4, 321O.7, 322.2, 322.3, 322.4, 322.27A, 322.35, 322C.2, 322D.1, 325A.2, 326.2, 327F.39, 423.1, 423.6, 423B.2, 452A.74A, 452A.76, 453A.4, 455B.301, 462A.34A, 476.27, 481A.54, 522A.2, 537.3604, 537B.2, 537B.4, 668.12A, 668.15A, 669.14, 670.4, 707.6A, 713.6A, 713.6B, 714.2, 714.8, 805.8A(14)(i), 805.9, 805.16, 811.9
Subsection 8, paragraphs g and i amended
Subsection 73 amended