Attributes of parking lots

The Parking Lot window opens when you insert a network object and have selected to automatically open the Edit dialog after object creation (Right-click behavior and action after creating an object). By default, only the Parking Lots list is opened.

Into the window, you enter attribute values for the network object. For network objects which have already been defined, you can call the window using the following functions:

► In the list of network objects of the network object type, double-click the row with the desired network object.
► In the Network editor, select the network object of your choice. Then, on its shortcut menu, click Edit.

The network object may have additional attributes. In the network objects list of the network object type, you can show all attributes and attribute values. You can open the list via the following functions:

► On the network object sidebar, right-click the desired network object type. Then on the shortcut menu, click Show List (Shortcut menu in the network object sidebar).
► In the Network editor, select the network object of your choice. Then, on its shortcut menu, click Show In List (Selecting network objects in the Network editor and showing them in a list).
► On the Lists menu, in the desired category, click the network object type.

In the network objects list of the network object type, you can edit attributes and attribute values of a network object (Selecting cells in lists), (Using lists).

The objects of this object type may have relations to other objects. This is why the attributes list is shown as part of a coupled list (on the left). On the Lists toolbar, in the Relations box, you can show and edit the coupled list with the attributes of the desired relation on the right (see below Showing and editing dependent objects as relation) and (Using coupled lists).

Note: In lists, you can use the Attribute selection icon to show and hide attribute values (Selecting attributes and subattributes for columns of a list).

Basic attributes of parking lots

The basic attributes of the network element are shown in the upper area of the window and in the list of network objects for the particular network object type.

1. Make the desired changes:

Element	Description
No.	Unique number
Name	Designation
At	Position (Pos): Distance from start of the link or connector
Length	Length of parking lot, at least 1 m
Type	Zone Connector: only relevant for dynamic assignment (Modeling parking lots and zones). Automatically creates a zone in the Zones list, if no zone has been defined. In the OD Pairs list, automatically creates an origin zone and a destination zone, if neither have been defined yet. Abstract parking lot: only relevant for dynamic assignment Real parking spaces relevant for simulation with and without dynamic assignment: modeling parking capacity in movement direction on one lane. Combined with vehicle routes of the type Parking Lot, you can realistically model parking maneuvers and stops at the roadside.
Showing label	If the option is not selected, the label for the parking lot is not displayed, even if you selected labeling for all parking lots. For parking lot labels, the following are available: Number Name Zone No. Group No. Occupancy Current parking availability
Evaluation groups	If the option is selected, the parking lot with this parking lot group will be included in the evaluation of parking lot groups (Displaying parking lot group results in lists).

Dyn. Assignment tab

These attributes are only relevant for parking lots of dynamic assignment (Defining parking lots for dynamic assignment).

Parking Spaces tab

These attributes are only relevant for Real parking spaces.

Element	Description
Link - lane	Number of the link and lane (Ln) on which the parking lot is located
Length per space	Length per parking space (LenPerSpc). The maximum length per space must not exceed the length of the parking lot. If the total length is not a multiple of the parking lot length, the remaining length is added to the end of the parking lot, but is not used by any vehicle.
Blocking time distribution	(BlockTmDistr, optional: The period of time that a vehicle blocks a lane during parallel parking on a multilane link before it finally comes to a stop in the parking space on the other lane. The blocking time begins when the vehicle pulling forward into a parking space first stops with the rear of the vehicle sticking out of the parking space onto the parallel lane, and it ends when the vehicle finally comes to a stop in the parallel-parked position. Not relevant for parking vehicles in diagonal and perpendicular parking spaces. Blocking time distribution is considered for parking lots on the adjacent lane and thus includes parking maneuvers in parallel to the direction of travel. Observe adjacent lanes must be selected for lateral behavior.(Editing the driving behavior parameter Lateral behavior). The Length of the parking lot must be longer than the Length per space. The time distribution may be a normal or an empirical distribution (Using distributions), (Using time distributions). If the parking lot is precisely as long as the parking space, the vehicle remains in parking position during the blocking time. In this case, blocking time distribution is ignored. 0: None: Blocking time is not considered for simulation.
Parking direction	ParkDir: Only for real parking spaces: Direction in which the vehicle is parking and leaving the parking space. For Any > opposite the following applies: The vehicle can pull forward or back into a perpendicular or diagonal parking lot in reverse direction. If the direction Forward > reverse is selected in Dynamic assignment and a zone is assigned to the parking lot, the following applies: When the vehicle is parking, it no longer leaves the parking lot. When the vehicle is inserted via an OD matrix, it does not leave the parking lot.
Minimum gap time major flow	MinGapTmMajFl: Minimum gap time between two vehicles of the major flow, so that a vehicle may leave the parking space
Speed (reversing)	SpeedRvs: Desired speed of the vehicle backing into or out of a parking space. Default value 5 km/h, value range 0.001 to 9999 km/h. This value can have a significant impact on the traffic flow.
Speed (forward driving)	SpeedForw: Desired speed of the vehicle pulling forward into or out of a parking space. Default value 5 km/h, value range 0.001 to 9999 km/h. This value can have a significant impact on the traffic flow.
Direction change duration distribution	DirChgDurDist: Only relevant if the attribute Parking direction Forward > reverse is selected: Time distribution for the standstill duration when changing the driving direction during a parking maneuver. Default: time distribution 5 s (Using time distributions). If no value is specified, the vehicle remains in standstill for the duration of a time step. This value can have a significant impact on the traffic flow.

Sel. parameters tab

Element	Description
Open hours	From (OpenFrom), to (OpenUntil): Time span during which vehicles can enter the parking lot. Vehicles will not drive to the parking lot outside these hours.
Maximum parking time	ParkTmMax: for Real parking spaces: Vehicles with a longer parking time are not assigned a parking space on this parking lot. for Zone connector and Abstract parking lot: Only relevant when using a trip chain file: time span a vehicle may use this parking lot. If the maximum parking time is shorter than the minimum dwell time, the parking lot is not approached by the vehicle. Vehicles that are assigned a route via a COM interface and vehicles moving based on an origin-destination matrix during dynamic assignment may select any destination parking lot open at the time of their departure, regardless of the attribute value Maximum parking time:. For these vehicles, for selection of a destination parking lot, a parking time of 1 s is assumed.
Attraction	Attrac: The higher the value, the more attractive the parking lot or parking space. This allows you to account for features of the parking lot that are not explicitly available as an attribute. For Real parking spaces, you can create a linear change in the attractiveness across the parking spaces by entering different values for First and Last. To define a parking lot with attractive parking spaces in the middle of or at the edge of the parking lot, add two symmetrical parking spaces of the type Real parking spaces, with mirror-inverted values for Attraction.
Parking Cost	ParkFee: only relevant for Zone Connector and Abstract parking lot: flat: fee for one-time use of the parking lot, irrespective of the dwell time. per hour: parking costs depending on the parking time. If a trip chain file is used, the minimum dwell time is considered. Without a trip chain file, an hour parking time is assumed for all parking.

The network object has additional attributes that you can show in the Attributes list. Among them are the following for example:

Short name	Description
CurrentOccup	Currenty occupancy: Number of parking spaces with vehicles in Parked parking state. Does not contain a value, if for the parking lot, the type Zone connector is selected. Number of parking vehicles, if for the parking lot, the type Abstract parking lot is selected.
CurReserv	Current reservations: Number of free parking spaces that have already been allocated to vehicles on their way to the parking space. These vehicles have the parking state Driving to parking space. If the length of the vehicle requires the reservation of more than one parking space, this is included in the value.
CurOverbook	Current overbookings: Number of occupied parking spaces where vehicles are waiting for them to become available
CurAvail	Current availability: Number of parking spaces that are neither occupied nor reserved
DetBlock	Detect blockage: For real parking spaces only: Select this option, if you want Vissim to check whether a parking space is blocked during the simulation. Vissim detects a vehicle blocking a parking space, without parking in it, e.g. when the vehicle parks in a space further upstream that lies on the same single lane link. The blocked parking space cannot be assigned to a vehicle traversing the parking routing decision. If this option is not selected, Vissim will not check whether a parking space is blocked during the simulation. Vissim does then not recognize vehicles blocking a parking space, unless they are parking in it. The blocked parking space can be assigned to a vehicle traversing the parking routing decision. This results in fewer vehicles ignoring the routing decision due to a lack of available parking spaces. The option is selected by default.
Zone	Allocation of the zone number in the OD matrix to the parking lot. Multiple parking lots can belong to a zone.

Showing and editing dependent objects as relation

The attribute and attribute values of this network object type are shown in the list on the left, which consists of two coupled lists.

1. In the list on the left, click the desired entry.

The list on the right contains attributes and attribute values of network objects, and/or base data allocated to the network object selected in the list on the left (Using coupled lists):

Evaluation groups: Parking lot groups that are used for the evaluation of parking lot groups and to which the parking lots are allocated.
Dyn assign des speed distributions (Defining parking lots for dynamic assignment)
Vehicles (parking): Attributes of the vehicles that are currently parked in the parking lot
Parking spaces: Parking space number of the parking spaces on the parking lot and number of the parking lot where the parking spaces are located
Paths: Paths of path file from dynamic assignment If no paths are shown and you have performed dynamic assignment, you can use its path file to read in the paths. To do so, on the List shortcut menu, click the respective command (Attributes of paths).

2. On the list toolbar, in the Relations list, click the desired entry.

3. Enter the desired data.

The data is allocated.

Superordinate topic:

Modeling parking lots

Information on editing:

Creating a car park in the network editor and defining attributes

Defining parking lots

Defining parking lot groups