Read the passage: 'Troopers must wear seat belts at all times while operating a patrol vehicle, except when conditions make doing so impractical, such as during slow-speed traffic-control duties.' When may a trooper operate without a seat belt under this policy?

1. During high-speed pursuits
2. Whenever the trooper prefers comfort
3. When conditions such as slow-speed traffic-control duties make it impractical
4. Never, under any circumstances