Answer:
8. bicyclists must us hand signals to indicate turns and stops.
9. Pay Attention. You should always keep your eyes on the road, but this is exceptionally important in work zones. ...; Slow Down. Lane closures, traffic pattern shifts and reduced speeds are common in work zones. ...; Move Into The Open Lane. ...; and Keep Your Distance.
10. From what i've experienced, i have seen very few railroad crossing gates.
11. 20 feet.
12. 500 feet.
13-15. Signs warn you that you are approaching railroad tracks. Look and listen for trains in both directions. Be ready to stop, if necessary. You should be prepared for a train to come at any time, day or night.
16-18. Be a Courteous Driver, Avoid Making Eye Contact, and Stay Off the Horn
19-21. avoid blind spots, watch for wide turns, and drive patiently.
Hope this helps! :)