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- Q338722 subject Q7483179.
- Q338722 abstract "In traffic engineering, the late merge or zipper method is a convention for merging traffic into a reduced number of lanes. Drivers in merging lanes are expected to use both lanes to advance to the lane reduction point and merge at that location, alternating turns.The late merge method contrasts with the early merge method. A related scheme is the dynamic late merge.The late merge method has not been found to increase throughput (throughput is the number of vehicles that pass through a point in a given period of time). However, it considerably reduces queue ("backup") length (because drivers use the ending lane until its end) and reduces speed differences between the two lanes, increasing safety.Governments hold campaigns to promote the late merge method because irritation, aggression and feelings of insecurity easily occur while "zipping". Often drivers who change lanes too early don't like to see other drivers continue until the end of the drop-away lane, even though this late merging is encouraged by the authorities. In Belgium and Germany, a driver must actually use the late merge by law (a driver can be penalised if he does not). In Austria only where a traffic sign so indicates.The appropriate late merging behavior consists of the following code of conduct: Continue as long as possible on the merging lane; At about 300 meters before the bottleneck (marked with a traffic sign), adjust to the speed of the vehicles driving on the adjacent lane; Vehicles driving on the adjacent lane deliberately make room for the merging vehicle; At about 50 meters before the bottleneck, without braking or disturbance of the created space, the vehicle merges. Thus the merging vehicle and the vehicle behind it can continue their ride.Please note that this system of traffic management is not in accordance with the laws of many jurisdictions and can, in fact, earn one a "failure to yield" or "unsafe merge" citation, as continuing traffic always has the right of way.".
- Q338722 thumbnail Ritsen2.png?width=300.
- Q338722 wikiPageExternalLink zippermerge.
- Q338722 wikiPageWikiLink Q1323078.
- Q338722 wikiPageWikiLink Q1640676.
- Q338722 wikiPageWikiLink Q183.
- Q338722 wikiPageWikiLink Q2119819.
- Q338722 wikiPageWikiLink Q31.
- Q338722 wikiPageWikiLink Q3111645.
- Q338722 wikiPageWikiLink Q3222002.
- Q338722 wikiPageWikiLink Q40.
- Q338722 wikiPageWikiLink Q7483179.
- Q338722 comment "In traffic engineering, the late merge or zipper method is a convention for merging traffic into a reduced number of lanes. Drivers in merging lanes are expected to use both lanes to advance to the lane reduction point and merge at that location, alternating turns.The late merge method contrasts with the early merge method.".
- Q338722 label "Merge (traffic)".
- Q338722 depiction Ritsen2.png.