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1   package org.opentrafficsim.base.parameters;
2   
3   import org.djunits.unit.LengthUnit;
4   import org.djunits.unit.SpeedUnit;
5   import org.djunits.value.vdouble.scalar.Acceleration;
6   import org.djunits.value.vdouble.scalar.Duration;
7   import org.djunits.value.vdouble.scalar.Length;
8   import org.djunits.value.vdouble.scalar.Speed;
9   import org.djutils.exceptions.Throw;
10  import org.opentrafficsim.base.parameters.constraint.ConstraintInterface;
11  
12  /**
13   * Predefined list of common parameter types.
14   * <p>
15   * Copyright (c) 2013-2019 Delft University of Technology, PO Box 5, 2600 AA, Delft, the Netherlands. All rights reserved. <br>
16   * BSD-style license. See <a href="http://opentrafficsim.org/docs/current/license.html">OpenTrafficSim License</a>.
17   * <p>
18   * @version $Revision$, $LastChangedDate$, by $Author$, initial version Apr 13, 2016 <br>
19   * @author <a href="http://www.tbm.tudelft.nl/averbraeck">Alexander Verbraeck</a>
20   * @author <a href="http://www.transport.citg.tudelft.nl">Wouter Schakel</a>
21   */
22  @SuppressWarnings("checkstyle:finalclass")
23  public class ParameterTypes implements ConstraintInterface
24  {
25      /** Do not create instance. */
26      private ParameterTypes()
27      {
28          //
29      }
30  
31      /** Fixed model time step. */
32      public static final ParameterTypeDuration DT;
33  
34      /** Car-following stopping distance. */
35      public static final ParameterTypeLength S0;
36  
37      /** Maximum (desired) car-following acceleration. */
38      public static final ParameterTypeAcceleration A;
39  
40      /** Maximum comfortable car-following deceleration. */
41      public static final ParameterTypeAcceleration B;
42  
43      /** Maximum critical deceleration, e.g. stop/go at traffic light. */
44      public static final ParameterTypeAcceleration BCRIT;
45  
46      /** Maximum adjustment deceleration, e.g. when speed limit drops. */
47      public static final ParameterTypeAcceleration B0;
48  
49      /** Current car-following headway. */
50      public static final ParameterTypeDuration T;
51  
52      /** Minimum car-following headway. */
53      public static final ParameterTypeDuration TMIN;
54  
55      /** Maximum car-following headway. */
56      public static final ParameterTypeDuration TMAX;
57  
58      /** Headway relaxation time. */
59      public static final ParameterTypeDuration TAU;
60  
61      /** Look-ahead time for mandatory lane changes. */
62      public static final ParameterTypeDuration T0;
63  
64      /** Look-ahead distance. */
65      public static final ParameterTypeLength LOOKAHEAD;
66  
67      /** Look-back distance. */
68      public static final ParameterTypeLength LOOKBACK;
69  
70      // TODO remove LOOKBACKOLD
71      /** Look-back distance, for old MOBIL code only. */
72      public static final ParameterTypeLength LOOKBACKOLD;
73  
74      /** Speed limit adherence factor. */
75      public static final ParameterTypeDouble FSPEED;
76  
77      /** Speed threshold below which traffic is considered congested. */
78      public static final ParameterTypeSpeed VCONG;
79  
80      /** Regular lane change duration. */
81      public static final ParameterTypeDuration LCDUR;
82  
83      /** Length of mental map ahead. */
84      public static final ParameterTypeLength PERCEPTION;
85  
86      /** Reaction time. */
87      public static final ParameterTypeDuration TR;
88  
89      static
90      {
91  
92          DT = new ParameterTypeDuration("dt", "Fixed model time step", Duration.createSI(0.5), POSITIVE);
93  
94          S0 = new ParameterTypeLength("s0", "Car-following stopping distance", Length.createSI(3.0), POSITIVE);
95  
96          A = new ParameterTypeAcceleration("a", "Maximum (desired) car-following acceleration", Acceleration.createSI(1.25),
97                  POSITIVE);
98  
99          B = new ParameterTypeAcceleration("b", "Maximum comfortable car-following deceleration", Acceleration.createSI(2.09),
100                 POSITIVE)
101         {
102             /** */
103             private static final long serialVersionUID = 20170203L;
104 
105             @Override
106             public void check(final Acceleration value, final Parameters params) throws ParameterException
107             {
108                 Acceleration b0 = params.getParameterOrNull(B0);
109                 Throw.when(b0 != null && value.si <= b0.si, ParameterException.class, "Value of b is below or equal to b0");
110                 Acceleration bCrit = params.getParameterOrNull(BCRIT);
111                 Throw.when(bCrit != null && value.si >= bCrit.si, ParameterException.class,
112                         "Value of b is above or equal to bCrit");
113             }
114         };
115 
116         BCRIT = new ParameterTypeAcceleration("bCrit", "Maximum critical deceleration, e.g. stop/go at traffic light",
117                 Acceleration.createSI(3.5), POSITIVE)
118         {
119             /** */
120             private static final long serialVersionUID = 20170203L;
121 
122             @Override
123             public void check(final Acceleration value, final Parameters params) throws ParameterException
124             {
125                 Acceleration b0 = params.getParameterOrNull(B0);
126                 Throw.when(b0 != null && value.si <= b0.si, ParameterException.class, "Value of bCrit is below or equal to b0");
127                 Acceleration b = params.getParameterOrNull(B);
128                 Throw.when(b != null && value.si <= b.si, ParameterException.class, "Value of bCrit is below or equal to b");
129             }
130         };
131 
132         B0 = new ParameterTypeAcceleration("b0", "Maximum adjustment deceleration, e.g. when speed limit drops",
133                 Acceleration.createSI(0.5), POSITIVE)
134         {
135             /** */
136             private static final long serialVersionUID = 20170203L;
137 
138             @Override
139             public void check(final Acceleration value, final Parameters params) throws ParameterException
140             {
141                 Acceleration b = params.getParameterOrNull(B);
142                 Throw.when(b != null && value.si >= b.si, ParameterException.class, "Value of b0 is above or equal to b");
143                 Acceleration bCrit = params.getParameterOrNull(BCRIT);
144                 Throw.when(bCrit != null && value.si >= bCrit.si, ParameterException.class,
145                         "Value of b0 is above or equal to bCrit");
146             }
147         };
148 
149         T = new ParameterTypeDuration("T", "Current car-following headway", Duration.createSI(1.2), POSITIVE);
150 
151         TMIN = new ParameterTypeDuration("Tmin", "Minimum car-following headway", Duration.createSI(0.56), POSITIVE)
152         {
153             /** */
154             private static final long serialVersionUID = 20160400L;
155 
156             @Override
157             public void check(final Duration value, final Parameters params) throws ParameterException
158             {
159                 Duration tMax = params.getParameterOrNull(TMAX);
160                 Throw.when(tMax != null && value.si >= tMax.si, ParameterException.class,
161                         "Value of Tmin is above or equal to Tmax");
162             }
163         };
164 
165         TMAX = new ParameterTypeDuration("Tmax", "Maximum car-following headway", Duration.createSI(1.2), POSITIVE)
166         {
167             /** */
168             private static final long serialVersionUID = 20160400L;
169 
170             @Override
171             public void check(final Duration value, final Parameters params) throws ParameterException
172             {
173                 Duration tMin = params.getParameterOrNull(TMIN);
174                 Throw.when(tMin != null && value.si <= tMin.si, ParameterException.class,
175                         "Value of Tmax is below or equal to Tmin");
176             }
177         };
178 
179         TAU = new ParameterTypeDuration("tau", "Headway relaxation time", Duration.createSI(25.0), POSITIVE);
180 
181         T0 = new ParameterTypeDuration("t0", "Look-ahead time for mandatory lane changes", Duration.createSI(43.0), POSITIVE);
182 
183         LOOKAHEAD = new ParameterTypeLength("Look-ahead", "Look-ahead distance", Length.createSI(295.0), POSITIVE);
184 
185         LOOKBACK = new ParameterTypeLength("Look-back", "Look-back distance", Length.createSI(200.0), POSITIVE);
186 
187         LOOKBACKOLD = new ParameterTypeLength("Look-back old", "Look-back distance (old version for MOBIL code)",
188                 Length.createSI(-200.0), NEGATIVE);
189 
190         FSPEED = new ParameterTypeDouble("fSpeed", "Speed limit adherence factor", 1.0, POSITIVE);
191 
192         VCONG = new ParameterTypeSpeed("vCong", "Speed threshold below which traffic is considered congested",
193                 new Speed(60, SpeedUnit.KM_PER_HOUR), POSITIVE);
194 
195         LCDUR = new ParameterTypeDuration("lcDur", "Regular lane change duration", Duration.createSI(3.0), POSITIVE);
196 
197         PERCEPTION = new ParameterTypeLength("perception", "Mental map length", new Length(2.0, LengthUnit.KILOMETER), POSITIVE);
198 
199         TR = new ParameterTypeDuration("Tr", "Reaction time", Duration.createSI(0.5), POSITIVEZERO);
200 
201     }
202 
203 }