Chapter 4 — Your Driving 69 Driving slower than the surrounding traffic is a major cause of rear-end crashes  in work zones. In the work zone, driving areas may be confined, and there  may be no maneuvering space or escape route for vehicles that unexpectedly  approach a slow-moving vehicle ahead. Traffic control devices such as  barricades, cones, drums, flaggers, etc. are used in work zones to guide and  direct drivers safely through the area. When driving in a work zone: The law requires use of headlights from sunset to sunrise and when visibility  is 400 feet or less. When you drive at night in a city, use low-beam headlights.  On the open road, use high-beam headlights unless you are approaching or  following another vehicle. • Never leave your headlights on when you park at night — they can blind the  drivers of oncoming vehicles. • When parking on or along a highway, turn on your emergency flashers; • Keep a lookout at all times — bright headlights from another vehicle make it  difficult to see beyond their source. • Never drive at a speed at which you cannot stop within the distance you can  see on the road ahead; and • Reduce speed and watch the road as far ahead as possible, looking slightly to the right so you will not be looking directly into the headlights of  oncoming traffic; • Stay on the right side of the road and use the edge of the road as a guide; • If the driver still does not dim the lights, keep your lights on low beam; • When an approaching vehicle does not dim its headlights, you can remind  the driver by blinking your high beams once; • Dirty windshields and poor lights can cause problems for some drivers. • A driver can be blinded by the headlights of oncoming vehicles; and • Drivers tend to be tired and less alert; • There are more impaired drivers on the road; • You cannot see as well; Tips for nighttime driving: Night driving is more dangerous than daytime driving because: • Recognize that when you see black-on-orange signs, you are about to enter a  work zone and should STAY ALERT. • Advance work zone signs may require you to take some action like shifting  your vehicle to another lane. • When you are required to take action, black-on-orange signs will convey the  message far in advance, so you will have enough time to take the action. • Do not wait until the last minute to take action — the signs provide sufficient  time for the driver to react without impeding traffic. Night Driving