Functional Intersection Area - Revision history

Smithk: minor clarification

2010-07-30T16:05:43Z

minor clarification

← Older revision		Revision as of 11:05, 30 July 2010
Line 15:		Line 15:
	Ideally, driveways and entrances should not be located within the functional area of an intersection or in the influence area of an adjacent driveway or entrance.		Ideally, driveways and entrances should not be located within the functional area of an intersection or in the influence area of an adjacent driveway or entrance.

	Addition information concerning the functional area of intersections is contained in [[940.3 Clearance of Functional Areas of Interchanges\|940.3 Clearance of Functional Areas of Interchanges]].		Addition information concerning the functional area of intersections is contained in [[940.3 Clearance of Functional Areas of Interchanges\|EPG 940.3 Clearance of Functional Areas of Interchanges]].

Smithk: article construction

2009-06-12T13:41:01Z

article construction

← Older revision		Revision as of 08:41, 12 June 2009
Line 4:		Line 4:

	* Perception-reaction distance		* Perception-reaction distance
			{\|border="4" align="right"
			\|-style="background:salmon"
			\|[[:Category:233 At - Grade Intersections\|'''Return to 233 At - Grade Intersections''']]
			\|}
	* Maneuver distance		* Maneuver distance
	* Queue-storage distance		* Queue-storage distance

EPG-Admin: add a link to 940.3 Clearance of Functional Areas of Interchanges

2008-05-07T16:12:13Z

add a link to 940.3 Clearance of Functional Areas of Interchanges

← Older revision		Revision as of 11:12, 7 May 2008
Line 10:		Line 10:

	Ideally, driveways and entrances should not be located within the functional area of an intersection or in the influence area of an adjacent driveway or entrance.		Ideally, driveways and entrances should not be located within the functional area of an intersection or in the influence area of an adjacent driveway or entrance.

			Addition information concerning the functional area of intersections is contained in [[940.3 Clearance of Functional Areas of Interchanges\|940.3 Clearance of Functional Areas of Interchanges]].

EPG-Admin at 13:45, 11 December 2006

2006-12-11T13:45:06Z

← Older revision		Revision as of 08:45, 11 December 2006
Line 1:		Line 1:
	An intersection is defined by both its [[~~Image~~:Physical and Functional Intersection Area.pdf\|functional and physical areas]]. The functional area of an intersection extends both upstream and downstream from the physical intersection area and includes any auxiliary lanes and their associated channelization.		An intersection is defined by both its [[Media:Physical and Functional Intersection Area.pdf\|functional and physical areas]]. The functional area of an intersection extends both upstream and downstream from the physical intersection area and includes any auxiliary lanes and their associated channelization.

	The [[~~Image~~:Elements of the Functional Area of an Intersection.pdf\|functional area]] on the approach to an intersection, driveway or entrance consists of three basic elements:		The [[Media:Elements of the Functional Area of an Intersection.pdf\|functional area]] on the approach to an intersection, driveway or entrance consists of three basic elements:

	* Perception-reaction distance		* Perception-reaction distance

EPG-Admin at 13:44, 11 December 2006

2006-12-11T13:44:38Z

New page

An intersection is defined by both its [[Image:Physical and Functional Intersection Area.pdf|functional and physical areas]]. The functional area of an intersection extends both upstream and downstream from the physical intersection area and includes any auxiliary lanes and their associated channelization.

The [[Image:Elements of the Functional Area of an Intersection.pdf|functional area]] on the approach to an intersection, driveway or entrance consists of three basic elements:

* Perception-reaction distance
* Maneuver distance
* Queue-storage distance

The distance traveled during the perception-reaction time will depend upon vehicle speed, driver alertness, and driver familiarity with the location. Where there is a left-turn lane, the maneuver distance includes the length needed for both braking and lane changing. In the absence of turn lanes, it involves braking to a comfortable stop. The storage length should be sufficient to accommodate the longest queue expected most of the time.

Ideally, driveways and entrances should not be located within the functional area of an intersection or in the influence area of an adjacent driveway or entrance.