def __init__(self, lab_name, link_id, link_info, guests, guest_checker):
"""
:param lab_name: Laboratory this link belongs to
:param link_id: Id of this link
:param link_info: Information to create this link (settings and endpoints)
:param guests: List of guests of the laboratory
:param guest_checker: GuestChecker instance
"""
Link.__init__(self, link_id, link_info, guests, guest_checker,
lab_name + "_l" + str(link_id))
def __init__(self, linkID, unode, dnode, params):
Link.__init__(self, linkID, unode, dnode, params)
# create a list of cells
self.cells = list()
# freeflowtime is equiv to length/delx*delt
#self.freeFlowTime = int((self.params['length']/(self.params['ffs'] / 3600.0) + self.params['timeStep'] - 1) / self.params['timeStep'])
# timeStep is used as a parameter since it affects cell size
self.numCells = math.ceil(self.params['length'] /
(self.params['ffs'] *
(1.0 / 3600) * self.params['timeStep']))
for c in range(self.numCells):
newCell = Cell(
self.params['qcap'],
self.params['jamDen'] * self.params['length'] / self.numCells,
self.params['bws'] / self.params['ffs'],
self.params['timeStep'], self.params['ffs'])
self.cells.append(newCell)
def __init__(self,
timestep,
freeFlowSpeed,
backwardWaveSpeed,
jamDensity,
length,
downstreamCapacity,
upstreamCapacity=DEFAULT,
ID=None):
# Create a generic link...
Link.__init__(self, timestep, freeFlowSpeed, backwardWaveSpeed,
jamDensity, length, downstreamCapacity, ID)
# ... then allow spatial queues to have different upstream and downstream capacities
self.downstreamCapacity = self.capacity
if (upstreamCapacity == DEFAULT):
self.upstreamCapacity = self.downstreamCapacity
else:
self.upstreamCapacity = upstreamCapacity / HOURS * timestep
def __init__(self,
timestep,
freeFlowSpeed,
backwardWaveSpeed,
jamDensity,
length,
capacity,
ID=None):
Link.__init__(self, timestep, freeFlowSpeed, backwardWaveSpeed,
jamDensity, length, capacity, ID)
# Create a cell for each timestep needed to traverse the link
self.cells = list()
# set proportion of cars
p = 0
# set vehicle lengths (in feet) and driver reaction time (in seconds)
busLength = 40
carLength = 15.75
reactionTime = 1.25
# override backward wave speed, jam density, and capacity given derived equations
self.backwardWaveSpeed = ((p * carLength + (1 - p) * busLength) /
reactionTime)
self.jamDensity = 1 / (
(self.freeFlowSpeed * reactionTime + p * carLength +
(1 - p) * busLength))
self.capacity = self.freeFlowSpeed / (
self.freeFlowSpeed * reactionTime + p * carLength +
(1 - p) * busLength)
# show link properties that were changed
print("Link: ", self.ID)
print("capacity (veh/s): ", self.capacity)
print("jamDensity (veh/ft): ", self.jamDensity)
print("backwardWaveSpeed (ft/s): ", self.backwardWaveSpeed)
print("----------------")
for c in range(self.freeFlowTime):
newCell = Cell(self.capacity,
self.jamDensity * self.length / self.freeFlowTime,
self.backwardWaveSpeed / self.freeFlowSpeed)
self.cells.append(newCell)
def __init__(self, identity, left, right, rate, delay, size):
Link.__init__(self, identity, left, right, rate, delay, size)
def __init__(self, name, nodes):
Link.__init__(self, name, nodes)
def __init__(self, identity, left, right, rate, delay, size): Link.__init__(self, identity, left, right, rate, delay, size)
