runner.py

#!/usr/bin/env python
# -*- coding: utf-8 -*-
# Eclipse SUMO, Simulation of Urban MObility; see https://eclipse.dev/sumo
# Copyright (C) 2008-2025 German Aerospace Center (DLR) and others.
# This program and the accompanying materials are made available under the
# terms of the Eclipse Public License 2.0 which is available at
# https://www.eclipse.org/legal/epl-2.0/
# This Source Code may also be made available under the following Secondary
# Licenses when the conditions for such availability set forth in the Eclipse
# Public License 2.0 are satisfied: GNU General Public License, version 2
# or later which is available at
# https://www.gnu.org/licenses/old-licenses/gpl-2.0-standalone.html
# SPDX-License-Identifier: EPL-2.0 OR GPL-2.0-or-later

# @file    runner.py
# @author  Mirko Barthauer
# @date    2023-11-06


from __future__ import print_function
from __future__ import absolute_import
import os
import sys

if "SUMO_HOME" in os.environ:
    sys.path.append(os.path.join(os.environ["SUMO_HOME"], "tools"))
import traci  # noqa
import sumolib  # noqa

traci.start([sumolib.checkBinary('sumo'), "-c", "sumo.sumocfg"])
step = 0
stopAtTime = 3
brakeTime = 3
leaderVehID = "slow"
while step < 30:
    traci.simulationStep()
    leaderSpeed = traci.vehicle.getSpeed(leaderVehID)
    if step == stopAtTime:
        traci.vehicle.slowDown(leaderVehID, 0, brakeTime)
    elif step == stopAtTime + brakeTime:
        traci.vehicle.setSpeed(leaderVehID, 0)
    step += 1
traci.close()