Keeping traffic flowing steadily ensures that everyone gets to their destinations quickly and safely. However, if you don't get up to speed in the acceleration lane before merging with traffic, you're causing chaos. Those who immediately merge into traffic before speeding up leave the other drivers behind on the ramp with an interesting choice: brake to get behind you, or gun it to pull ahead. Either way is dangerous. Use the full length of the lane, if needed. That's why it's there.

Related Autos links:
How to keep your cool in traffic
Driver's survival guide to road rage, carjackers and floods
Tips to avoid road rage