VISSIM 5.30-05 User Manual

The Pedestrians Editor (Add-on)
right of way or have to yield). Depending on the current right of way settings
and based on their desired speeds and their current speeds the pedestrians
and vehicles decide when to cross the conflict area.
A conflict area has also a user-definable stop line distance (red: 1+2+3+4). It
describes the upstream position on the link where pedestrians or vehicles
have to wait if they yield. Otherwise, the stop line position is right before the
upstream start of the conflict area. The user can define the stop line in
upstream direction of the conflict area´s regular stop line (x_min).
If the two links intersect with an acute angle, the distance which is to be
covered to cross the road will increase and so will the time required for
crossing. At present, no geometrical analysis is performed for evaluation of
the relative position of the two links which are connected by the conflict
area. Thus it might happen in this case, that a pedestrian is still crossing
the road when the next vehicle enters it.
Case 1: Pedestrians yield
to vehicles
Pedestrians who want to
enter the conflicted area
(yellow: 1+2) and cross the
vehicle link (A1), have to
consider the minimum
speed, which is calculated at
the stop lines (red: 1+2).
At the stop lines minimum speeds are dynamically computed: Pedestrians
walking with that or higher speed can pass the stop line, others have to wait
in front of it.
Pedestrians will enter the conflict area crossing a traveled road only if they
can cross the entire link (lane by lane) without ever being located on a lane
on which a vehicle is just passing the conflict area. Here, the desired speed
of the pedestrian and the current speed of the vehicle are regarded. Neither
vehicles which have not yet entered the network nor vehicles in a distance
greater than 75 m multiplied by the number of link lanes are taken into
account. After entering the conflict area, this condition can no longer be
satisfied, if a vehicle accelerates, for example, or if a new vehicle enters the
network nearby. In this case, the pedestrian will wait in front of that lane of
the link, which he presumably cannot cross completely before the vehicle
arrives.
User Manual © PTV AG 2011 361