UPS truck drivers almost never make a left-handed turn during their delivery route. Orion software is designed to get rid of most left-handed turns during the route to help efficiency in countries with right-handed traffic (like the United States). Even though this can seem convoluted, left turns usually slow down UPS trucks as they have to wait for larger gaps in traffic to turn. By taking multiple, easier right turns, UPS vehicles can end up making all the same stops in less time.