Illinois permit test: speed and following distance

1. The 20 mph school zone limit applies on school days from early morning to mid-afternoon, only when children are present and the zone is signed. (p. 27)
2. When no minimum is posted, you should not drive so slowly that you interfere with the normal movement of traffic. (p. 27)
3. Illinois alleys have a 15 mph speed limit unless otherwise posted. (p. 27)
4. Illinois law prohibits photography and wireless phone use within 500 feet of an emergency scene, with some exceptions. (p. 28)
5. When an emergency vehicle with lights or siren approaches, pull to the right and let it pass. (p. 28)
6. Drivers may not drive over fire hoses unless permitted by the fire official in command of the scene. (p. 28)
7. Illinois construction zone speed limits must be obeyed 24 hours a day, 7 days a week, regardless of whether workers are present. (p. 28)
8. Following too closely, or tailgating, causes most rear-end crashes. (p. 86)
9. The three-second rule applies on good roads in good weather. (p. 86)
10. At 55 mph you travel about 81 feet each second, so a three-second following distance is about 243 feet. (p. 86)

Taken from the explanations to checked practice questions; page numbers link to the official handbook.