The "best" parking layout depends on whether you prioritize capacity, ease of use, or traffic flow. For maximum capacity, the 90-degree (perpendicular) layout is the standard; it fits the most cars into a given area but requires the widest aisles (approx. 24 feet) to allow for the sharp turning radius. For ease of use and safety, the 45-degree angled layout is widely considered superior. It allows drivers to pull in and out with a minimal turning radius, significantly reducing "fender benders" and speeding up circulation. For tight, narrow sites, a 30-degree layout is ideal as it requires the narrowest aisles and supports a one-way traffic pattern. In 2026, "Smart Parking" designs often incorporate 60-degree angles as a "sweet spot" that balances density with maneuverability. While parallel parking is the most space-conserving for linear street segments, it is the least efficient for time and traffic flow, making it the least desirable option for high-turnover commercial lots where efficiency is paramount.