| No. | Item | Definition |
|---|---|---|
| 1. | accident-hit | affected by a crash |
| 2. | at a standstill | completely stopped |
| 3. | awful | very bad to experience |
| 4. | backed up | delayed with vehicles lined up |
| 5. | blocked | prevented from moving freely |
| 6. | bottlenecked | restricted at a narrow point |
| 7. | brisk | moving at a lively pace |
| 8. | building | increasing in volume |
| 9. | bumper-to-bumper | packed very closely together |
| 10. | busy | full of traffic activity |
| 11. | choked | overfilled and barely moving |
| 12. | clear | open and easy to travel |
| 13. | clearing | becoming more open |
| 14. | clogged | blocked and moving poorly |
| 15. | congested | crowded with too many vehicles |
| 16. | crawling | moving extremely slowly |
| 17. | creeping | moving very slowly |
| 18. | crowded | full of many vehicles |
| 19. | dangerous | likely to cause harm |
| 20. | delayed | running later than expected |
| 21. | dense | closely packed with vehicles |
| 22. | detoured | sent around a blockage |
| 23. | diverted | redirected away from usual route |
| 24. | easing | becoming less congested |
| 25. | eastbound | traveling toward the east |
| 26. | empty | having almost no vehicles |
| 27. | erratic | changing unpredictably |
| 28. | fast-moving | moving at high speed |
| 29. | flowing | moving steadily along |
| 30. | fluid | moving easily and continuously |
| 31. | frantic | wildly busy and stressed |
| 32. | free-flowing | moving smoothly without delay |
| 33. | funneling | being forced through a narrow point |
| 34. | gridlocked | completely stuck and unable to move |
| 35. | hazardous | dangerous for road users |
| 36. | heavy | very busy with many vehicles |
| 37. | hemmed in | confined by surrounding vehicles |
| 38. | holiday | typical of vacation travel periods |
| 39. | horrendous | shockingly bad and difficult |
| 40. | impassable | unable to be traveled through |
| 41. | inbound | heading toward the center |
| 42. | intermittent | starting and stopping repeatedly |
| 43. | jammed | blocked by heavy traffic |
| 44. | light | not very busy |
| 45. | local | using nearby streets or roads |
| 46. | logjammed | badly blocked and delayed |
| 47. | manageable | not too difficult to handle |
| 48. | merging | combining into one traffic stream |
| 49. | metered | released in controlled amounts |
| 50. | mixed | showing varied traffic conditions |
| 51. | moderate | neither light nor heavy |
| 52. | mounting | growing heavier or worse |
| 53. | navigable | able to be driven through |
| 54. | nightmarish | extremely bad and stressful |
| 55. | normal | typical for the area |
| 56. | northbound | traveling toward the north |
| 57. | obstructed | partly blocked by something |
| 58. | oncoming | approaching from the opposite direction |
| 59. | one-way | moving in a single direction |
| 60. | open | available and not blocked |
| 61. | outbound | heading away from the center |
| 62. | overflowing | exceeding normal road capacity |
| 63. | paralyzed | brought to a complete halt |
| 64. | passable | able to be traveled on |
| 65. | patchy | heavy in some places only |
| 66. | peak | at the busiest time |
| 67. | predictable | easy to expect and plan |
| 68. | queued | lined up waiting to move |
| 69. | quiet | having little traffic |
| 70. | regulated | managed by rules or systems |
| 71. | rerouted | sent along a different path |
| 72. | restricted | limited by rules or conditions |
| 73. | risky | not fully safe to drive |
| 74. | rolling | moving steadily forward |
| 75. | rush-hour | typical of peak travel times |
| 76. | slow-moving | moving at a low speed |
| 77. | sluggish | moving slowly and heavily |
| 78. | smooth | moving easily without interruption |
| 79. | snarled | tangled and badly delayed |
| 80. | stalled | temporarily not moving |
| 81. | steady | moving at a regular pace |
| 82. | stop-and-go | alternating between stopping and moving |
| 83. | streaming | moving in a continuous flow |
| 84. | surging | rising suddenly in volume |
| 85. | swelling | growing larger and denser |
| 86. | tailing back | extending backward in a queue |
| 87. | thick | dense and hard to pass |
| 88. | thinning | becoming less dense |
| 89. | through | passing straight through an area |
| 90. | treacherous | especially risky to travel |
| 91. | two-way | moving in both directions |
| 92. | uneven | not steady or consistent |
| 93. | uninterrupted | continuing without stops |
| 94. | variable | changing from place to place |
| 95. | weaving | moving side to side |
| 96. | weekday | typical of workdays |
| 97. | weekend | typical of Saturday and Sunday |
| 98. | westbound | traveling toward the west |
| 99. | wide-open | completely clear and fast |
| 100. | worsening | becoming more congested |