# Roads, Access & ADA
## Access & circulation
- **Driveways / curb cuts** require approval from the road authority, with adequate **sight distance**.
- **Traffic studies** may be required; the agency can require **off-site improvements** (turn lanes, signals) — a significant cost.
- On-site **drive aisles, fire lanes, and turning radii** must meet fire-department and code standards.
## Parking
Zoning sets **minimum (and sometimes maximum) parking counts**, stall dimensions, and accessible-space requirements.
## ADA / accessibility
Public and commercial sites must meet **ADA** standards: accessible routes, parking, ramps, slopes, and entrances. Bake accessibility into the grading and layout from the start — retrofitting is costly.
**Takeaway:** Bake access and ADA into the layout from the start; retrofitting is costly.
> *Educational content — not legal, engineering, or financial advice. Requirements vary by jurisdiction; always confirm with the local authority and your professional team.*
