Authority: IC 8-23-2-6; IC 9-21-19-2

Affected: IC 8-23-2-6

Sec. 4. (a) Unless waived by the department at the initial meeting or subsequent to the initial meeting, in writing, an applicant subject to this rule shall be required to conduct, at the applicant's expense, a traffic impact analysis study if one (1) or more of the following warrants are met:

1. (1) Warrant 1, land use intensity, the development generates more than one hundred (100) vehicle trips in the peak direction within one (1) street peak hour.

2. (2) Warrant 2, level-of-service, either:

   1. (A) the traffic generated by the proposed development causes the level-of-service of the adjacent streets and intersections to drop to "C" or lower; or
   2. (B) the nearby intersections currently operate at level-of-service "D" or lower.

3. (3) Warrant 3, roadway modifications, the proposed development:

   1. (A) is expected to significantly impact a roadway segment identified in the transportation improvement program; or

   2. (B) includes modifications to the roadway system, such as:

      1. (i) the addition of lanes to accommodate site-generated traffic, exclusive turning lanes, acceleration/deceleration lanes, median openings; and
      2. (ii) the installation of traffic signals and other traffic control devices.
4. (4) Warrant 4, special cases, it is determined at the initial meeting or from a preliminary study that the traffic generated from the proposed development will create safety, operational, or other traffic problems.

(b) This section shall not be construed to limit the conditions by which the department may require a traffic impact analysis study.

(Indiana Department of Transportation; 105 IAC 7-1.5-4; filed Jul 1, 1999, 11:00 a.m.: 22 IR 3361; readopted filed Nov 7, 2001, 3:20 p.m.: 25 IR 899; readopted filed Jun 14, 2007, 2:45 p.m.: 20070627-IR-105070237RFA; readopted filed Oct 2, 2013, 11:39 a.m.: 20131030-IR-105130295RFA; readopted filed Oct 4, 2019, 10:07 a.m.: 20191030-IR-105190413RFA; readopted filed Oct 21, 2025, 3:46 p.m.: 20251112-IR-105240645RFA)