3. Easier Maintenance 
For the poor souls who have to clean public restrooms (and I always leave a little extra tip for them in my heart!), U-shaped toilets are a blessing:
- Faster to clean: Less surface area means less scrubbing
- No hard-to-reach spots: That front opening means cleaning crews can get to every part of the seat easily
- More durable: With less material and a simpler design, they tend to hold up better in high-traffic situations
4. Cost-Effective 
Public facilities have budgets to think about! U-shaped seats:
- Use less material to manufacture
- Are generally less expensive to replace
- Last longer in commercial settings