---
title: Simulation/ParkingArea
permalink: /Simulation/ParkingArea/
---

# Parking Areas

Areas for parking outside the road network (either road-side parking or
car parks) can be defined using the `<parkingArea>` element. This accomplishes the
following purposes:

- arbitrary parking positions and angles can be defined to visualize
  fishbone or parallel parking
- parking space outside the road network can be limited to a set
  capacity
- automatic rerouting to an alternative parking area can be triggered
  whenever a parking area becomes full

# Definition

A road-side parkingArea is defined as in the following:

```
<parkingArea id="ParkAreaA" lane="a_0" startPos="200" endPos="250" roadsideCapacity="5" angle="45" length="30"/>
```

Additionally, individual parking spaces can be defined:

```
<parkingArea id="ParkAreaB" lane="b_0" startPos="240" endPos="260" roadsideCapacity="0" width="5" length="10" angle="30">
    <space x="853" y="623"/>
    <space x="863" y="618"/>
    <space x="873" y="613"/>
    <space x="883" y="608"/>
    <space x="893" y="603"/>
    <space x="848" y="611" width="4" length="8" angle="120"/>
    <space x="858" y="606" width="4" length="8" angle="120"/>
    <space x="868" y="601" width="4" length="8" angle="120"/>
    <space x="878" y="596" width="4" length="8" angle="120"/>
    <space x="888" y="591" width="4" length="8" angle="120"/>
</parkingArea>
```

The total capacity of a parking area is given by the sum of its
*roadsideCapacity* and the number of its `<space>` elements.

The parkingArea supports the following attributes:

| Attribute Name   | Value Type     | Value Range                                                                                  | Default                                | Description                                                                                                                |
| ---------------- | -------------- | ---------------------------------------- | -------------------------------------- | --------------------------------------------------- |
| **id**           | string         | id                                                                                           |                                        | The name of the parking area; must be unique                                                                               |
| **lane**         | string         | valid lane id                                                                                |                                        | The name of the lane the parking area shall be located at                                                                  |
| **startPos**     | float          | \-lane.length < x < lane.length (negative values count backwards from the end of the lane) | 0                                      | The begin position on the lane (the lower position on the lane) in meters                                                  |
| endPos           | float          | \-lane.length < x < lane.length (negative values count backwards from the end of the lane) | lane.length                            | The end position on the lane (the higher position on the lane) in meters, must be larger than *startPos* by more than 0.1m |
| friendlyPos      | bool           | *true,false*                                                                                 | *false*                                | whether invalid stop positions should be corrected automatically (default *false*)                                         |
| name             | string         | simple String                                                                                |                                        | Arbitrary text to describe the parking area. This is only used for visualization purposes.                                 |
| roadsideCapacity | int            | non-negative                                                                                 | 0                                      | The number of parking spaces for road-side parking                                                                         |
| onRoad           | bool           |                                                                                              | false                                  | Whether vehicles remain on the road while parking.<br>**Note:**<br>If set to *true*, only roadSideCapacity is used and no `<space>`-definitions are permitted.                                                                        |
| width            | float          | positive                                                                                     | 3.2                                    | The width of the road-side parking spaces                                                                                  |
| length           | float          | positive                                                                                     | (endPos - startPos) / roadsideCapacity | The length of the road-side parking spaces                                                                                 |
| angle            | float (degree) |                                                                                              | 0                                      | The angle of the road-side parking spaces relative to the lane angle, positive means clockwise                             |

## Custom parking spaces

The space element supports the following attributes:

| Attribute Name | Value Type     | Value Range | Default                                                                  | Description                                     |
| -------------- | -------------- | ----------- | ------------------------------------------------------------------------ | ----------------------------------------------- |
| **x**          | float          |             |                                                                          | The x-position in meters of the parking vehicle |
| **y**          | float          |             |                                                                          | The y-position in meters of the parking vehicle |
| z              | float          |             | 0                                                                        | The z-position in meters of the parking vehicle |
| width          | float          |             | width value of the parent parking area                                   | The width of the parking space                  |
| length         | float          |             | length value of the parent parking area                                  | The length of the parking space                 |
| angle          | float (degree) |             | absolute angle of the parent parking area (lane angle + angle attribute) | Absolute angle of the parking space             |

!!! caution
    Please note that parking areas must be added to a config via the *--additional-files* parameter (see {{AdditionalFile}}).

# Letting Vehicles stop at a parking area

The declare a vehicle that stops at a parkingPlace, a `<stop>`-definition must
be part of the vehicle or it's route:

```
<vehicle id="0" depart="0">
    <route edges="e1 e2 e3"/>
    <stop parkingArea="pa0" duration="20"/>
</vehicle>
```

What is defined here is a vehicle named "0" that stops as at parkingArea
"pa0". Note, that the lane of that parking area must belong to one of
the edges "e1, e2, e3" of the vehicles route.

For a complete list of attributes for the "stop"-element of a vehicle
see
[Definition_of_Vehicles,_Vehicle_Types,_and_Routes\#Stops](../Definition_of_Vehicles,_Vehicle_Types,_and_Routes.md#stops).

# Modelling Maneuvering times when Entering and leaving the parking Space

When setting the (boolean) option **--parking.maneuver**, vehicles will spend extra time on the road when leaving and entering a parkingArea. This time depends on the angle of the parking lot relative to the road lane and can be configured with the vType attribute *maneuverAngleTimes*. This is a comma-separated list of numer-triplets of the form *ANGLE ENTERINGTIME LEAVINGTIME*:

```
<vType id="example" maneuverAngleTimes="10 3.0 4.0,80 1.6 11.0,110 11.0 2.0,170 8.1 3.0,181 3.0 4.0"/>
```

The value corresponding to the closest angle is used. The value of maneuverAngleTimes is initialized to a vClass-specific value:

- default: `manoeuverAngleTimes="10 3 4,80 1 11,110 11 2,170 8 3,181 3 4"`
- truck, trailer, coach, delivery: all times doubled compared to default
- bicycle, moped: `manoeuverAngleTimes="181 1 1"`

# Rerouting when the current parkingArea is full

If a vehicle reaches a parkingArea that is filled to capacity it must
wait on the road until a space becomes available or [reroute to a new
parking
area](../Simulation/Rerouter.md#rerouting_to_an_alternative_parking_area).

# TraCI

Some information regarding parking areas can be accessed directly using
[traci.simulation.getParameter()
calls](../TraCI/Simulation_Value_Retrieval.md#generic_parameter_retrieval_0x7e).

- **parkingArea.capacity**: total number of parking spaces
  (roadsideCapacity + number of `<space>` elements)
- **parkingArea.occupancy**: number of vehicles parking at this
  parking area