Questions to Consider
When determining the need for and level of detail of an engineering study, the following questions should be considered:
- Do the proposed driveway(s) meet the minimum spacing requirements per Tables 2-1 and 2-2 (or local requirements, as applicable)?
- Will the proposed driveway(s) require a deceleration or acceleration lane? If so, refer to the TxDOT Roadway Design Manual for lengths and other design criteria.
- Are there any sight distance or physical obstructions that will result in a safety problem?
- Are there any environmental or hydraulic issues associated with the proposed driveway(s)?
The responses to the above list of questions will assist in determining the level of detail required in an engineering study.
If necessary, specifics regarding needed level of study, time of day analysis, phasing of development, and project area can be defined and agreed upon at the initial coordination meeting. Additional information and analysis may be required if the access connection cannot meet the minimum spacing requirements, or there is an operational or safety impact.