2 Del. Admin. Code § 2.3
A Traffic Operational Analysis (TOA) is an evaluation or series of evaluations conducted during the review of subdivision, land development and entrance plans primarily intended to determine site entrance location and movements to be allowed at the site entrance. These evaluations may include Queuing Analysis, Highway Capacity Manual (HCM) Analysis, and Crash Analysis. A TOA is usually, but not always, more limited in scope than a TIS.
To ensure safe access to all proposed land development plans, the developer may be required to prepare an operational analysis for review by DelDOT. This operational analysis shall consist of but is not limited to one or more of the following evaluations:
This information shall be used to determine what modifications or improvements need to be made to ensure safe access to the State-maintained roadway system.
DelDOT may require a TOA for any development project that is expected to generate 200 or more vehicle trips per day and for which a TIS was not completed. DelDOT shall require a TOA for such a project if:
If a development project's scope changes after DelDOT and the Applicant have agreed upon the initial scope of study, DelDOT may revisit the scope of a TOA that is being prepared, or require a new TOA or a Traffic Impact Study (TIS).
If the TOA is not needed with respect to Section 2.2.2.4 and the project developer agrees to make traffic improvements determined by both the Subdivision Engineer and the Chief Traffic Engineer, or designee, to adequately address the concerns that prompted the initial requirement of a TOA, DelDOT may waive the requirement for the TOA.
Projects that do not generate 200 or more vehicle trips per day will not be required to complete a TOA.
The TOA, if required, must be reviewed and accepted by DelDOT prior to the issuance of a Letter of No Objection to Recordation.
Other traffic analyses that may be required in addition to a TIS or TOA in the review of land development plans may include traffic signal justification analysis, and/or the development of a Transportation Management Plan (TMP). A traffic signal justification analysis will likely be required to be performed by the developer if it is desired or expected that a new traffic signal will need to be installed concurrent with or soon after the opening of a new development. A TMP may be required for large projects, or projects that impact roadways on the National Highway System (NHS).
If a TOA is prepared for a proposed development and DelDOT finds that existing or projected future conditions in the study area have changed significantly after the completion of the TOA, DelDOT may require a new, revised, or updated TOA at its sole discretion before issuing a Letter of No Objection to Recordation or, where a DelDOT Letter of No Objection to Recordation is not required, before approving entrance plans. DelDOT will take reasonable measures in scoping the study to avoid the need for additional work once the study is complete. However, it is the Applicant's responsibility to obtain plan approvals while their TOA is still valid and to demonstrate that validity as necessary.
2 Del. Admin. Code § 2.3
15 DE Reg. 551 (10/01/11)
16 DE Reg. 1199 (5/1/2013)
18 DE Reg. 240 (9/1/2014)
18 DE Reg. 709 (3/1/2015)
19 DE Reg. 938 (4/1/2016) (Final)