Transportation Research Thesaurus (TRT)

  1. Habitat (Ecology)
  2. Habitual traffic violators USE Traffic violators
  3. Half spaces (Building)
  4. Halides
  5. Halite
  6. Halloysite
  7. Hallucinogenic drugs
  8. Halogenated compounds
  9. Halogens
  10. Hammers
  11. Hand
  12. Hand signaling
  13. Hand trucks
  14. Handbooks
  15. Handguns USE Firearms
  16. Handheld computers
  17. Handicapped drivers
  18. Handicapped persons USE Physically handicapped persons
  19. Handlebars
  20. Handling and conveying equipment
  21. Handling and storage
  22. Handling characteristics
  23. Handling equipment USE Cargo handling equipment
  24. Hangars
  25. Hangover
  26. Haptic USE Tactile perception
  27. HAR USE Highway advisory radio
  28. Harbor traffic control
  29. Harbors
  30. Harbours USE Harbors
  31. Hard disks
  32. Hard materials
  33. Hard shoulders USE Paved shoulders
  34. Hardness
  35. Hardness tests
  36. Hardware (Computers) USE Computers
  37. Hardware in the loop simulation
  38. Hardwoods
  39. Harmonic analysis (Mathematics)
  40. Harmonic analysis (Physics)
  41. Harmonics
  42. Harmonisation USE Standardization
  43. Harmonization USE Standardization
  44. Hatch covers
  45. Haul distance
  46. Haul roads
  47. Hazard analysis
  48. Hazard evaluation
  49. Hazard markings
  50. Hazard mitigation
  51. Hazardous chemicals
  52. Hazardous materials
  53. Hazardous materials
  54. Hazardous materials spills USE Spills (Pollution)
  55. Hazardous substances USE Hazardous materials
  56. Hazardous wastes
  57. Hazardous wastes
  58. Hazards
  59. Hazards and emergency operations
  60. Haze
  61. Head
  62. Head motion range
  63. Head on collisions
  64. Head up displays
  65. Headlamps
  66. Headlights USE Headlamps
  67. Headrests
  68. Headways
  69. Health
  70. Health care
  71. Health care facilities
  72. Health care services
  73. Health hazards
  74. Health physics
  75. Hearing USE Auditory perception
  76. Hearing impaired persons
  77. Hearing loss
  78. Hearings
  79. Heart
  80. Heart diseases USE Cardiac disorder
  81. Heart rate
  82. Heat
  83. Heat affected zone (Metals)
  84. Heat balance
  85. Heat conduction
  86. Heat content USE Enthalpy
  87. Heat convection
  88. Heat cycle
  89. Heat engines
  90. Heat exchange
  91. Heat exchangers
  92. Heat flow
  93. Heat flux
  94. Heat insulating materials
  95. Heat loss
  96. Heat measurement USE Temperature measurement
  97. Heat of hydration
  98. Heat of solution
  99. Heat pipes
  100. Heat radiation
  101. Heat resistance USE Thermal resistance
  102. Heat resistant materials
  103. Heat sinks
  104. Heat storage
  105. Heat transfer
  106. Heat transfer devices
  107. Heat transmission USE Heat flow
  108. Heat treated rail
  109. Heaters
  110. Heating
  111. Heating
  112. Heating equipment
  113. Heating systems
  114. Heating, cooling and ventilation equipment
  115. Heaving (Pavements) USE Blowup (Pavements)
  116. Heaving (Ship motion)
  117. Heavy duty trucks
  118. Heavy duty vehicles
  119. Heavy goods vehicles USE Trucks
  120. Heavy lift shipping
  121. Heavy lift vessels
  122. Heavy metals
  123. Heavy oils
  124. Heavy rail transit USE Rapid transit
  125. Heavy vehicles
  126. Hedging (Finance)
  127. Heeling
  128. Height
  129. Height
  130. Helicopter ambulances USE Air ambulances
  131. Helicopter lines
  132. Helicopter pilots
  133. Helicopter rotors USE Rotors
  134. Helicopter transportation
  135. Helicopters
  136. Heliports
  137. Helium
  138. Helmets
  139. Hemispheres
  140. Hemorrhage USE Bleeding
  141. Herbicides
  142. Heroin
  143. Heterogeneity
  144. Heteroscedasticity
  145. Heuristic methods
  146. High accident locations USE Accident prone locations
  147. High beamed headlamps
  148. High capacity cars
  149. High density
  150. High early strength cement
  151. High expansion foams
  152. High frequency
  153. High mast lighting
  154. High mounted brake lamps
  155. High occupancy toll lanes
  156. High occupancy vehicle lanes
  157. High occupancy vehicle lanes
  158. High occupancy vehicles
  159. High performance concrete
  160. High performance surface ships
  161. High rise construction USE Multistory structures
  162. High risk drivers
  163. High school driving courses
  164. High school graduates
  165. High school students
  166. High schools
  167. High speed craft
  168. High speed ground transportation
  169. High speed photography
  170. High speed track
  171. High speed trains
  172. High speed vehicles
  173. High strength
  174. High strength concrete
  175. High strength materials
  176. High strength steel
  177. High technology industries
  178. High temperature
  179. High traffic roads USE High volume roads
  180. High voltage
  181. High volume roads
  182. Highway accidents USE Traffic accidents
  183. Highway advisory radio
  184. Highway beacons
  185. Highway beacons
  186. Highway bridges
  187. Highway capacity
  188. Highway communications USE Driver information systems
  189. Highway construction USE Road construction
  190. Highway corridors
  191. Highway curves
  192. Highway delineators
  193. Highway departments
  194. Highway design
  195. Highway engineering
  196. Highway engineers
  197. Highway facilities
  198. Highway facilities for motorized users
  199. Highway facilities for nonmotorized users
  200. Highway factors in accidents