Transportation Engineering: Traffic Flow,
Control Devices, and Road Standards
Exam 2026 Questions and Answers
Graded A+
Standards - Correct answer-AASHTO FDOT FHWA
Intercity (between areas) - Correct answer-Air passenger railroads private autos
Intracity (within areas) - Correct answer-Pedestrians bicycles private autos local
bus heavy rail light rail express bus boat
Personal Transportation - Correct answer-Walking car bike personal boat
Public Transportation - Correct answer-Local bus heavy rail light rail express bus
Capacity - Correct answer-People or tons roads or rail can accommodate
HCM - Correct answer-Highway Capacity Manual
Rate of Flow - Correct answer-Made up of flow measured over standard rate of
time (15 minutes)
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, Prevailing Conditions - Correct answer-Physical traffic control conditions
Uninterrupted Flow - Correct answer-Freeways multi-highways two-way highways
Interrupted Flow - Correct answer-Arterials streets urban roads
Reaction Distance - Correct answer-dr = 1.47 S t
Superelevation Relationship - Correct answer-e + f = V² / (15R)
Side Friction (f) - Correct answer-Side friction factor
Speed (S) - Correct answer-Speed in mph
Radius of Curvature (R) - Correct answer-R = S² / 15(e + f)
Gravity (g) - Correct answer-32.2 ft/s²
Braking Distance - Correct answer-db = (Si² − Sf²) / 30(f ± G)
Initial Speed (Si) - Correct answer-Initial speed in mph
Final Speed (Sf) - Correct answer-Final speed in mph
Rolling/Skidding Friction - Correct answer-Approximately 0.348
Grade (G) - Correct answer-Grade of road
Stopping Sight Distance - Correct answer-SSD = 1.47Si t + (Si² − Sf²) / 30(f ± G)
©COPYRIGHT 2025,ALL RIGHTS RESERVED 2
Control Devices, and Road Standards
Exam 2026 Questions and Answers
Graded A+
Standards - Correct answer-AASHTO FDOT FHWA
Intercity (between areas) - Correct answer-Air passenger railroads private autos
Intracity (within areas) - Correct answer-Pedestrians bicycles private autos local
bus heavy rail light rail express bus boat
Personal Transportation - Correct answer-Walking car bike personal boat
Public Transportation - Correct answer-Local bus heavy rail light rail express bus
Capacity - Correct answer-People or tons roads or rail can accommodate
HCM - Correct answer-Highway Capacity Manual
Rate of Flow - Correct answer-Made up of flow measured over standard rate of
time (15 minutes)
©COPYRIGHT 2025,ALL RIGHTS RESERVED 1
, Prevailing Conditions - Correct answer-Physical traffic control conditions
Uninterrupted Flow - Correct answer-Freeways multi-highways two-way highways
Interrupted Flow - Correct answer-Arterials streets urban roads
Reaction Distance - Correct answer-dr = 1.47 S t
Superelevation Relationship - Correct answer-e + f = V² / (15R)
Side Friction (f) - Correct answer-Side friction factor
Speed (S) - Correct answer-Speed in mph
Radius of Curvature (R) - Correct answer-R = S² / 15(e + f)
Gravity (g) - Correct answer-32.2 ft/s²
Braking Distance - Correct answer-db = (Si² − Sf²) / 30(f ± G)
Initial Speed (Si) - Correct answer-Initial speed in mph
Final Speed (Sf) - Correct answer-Final speed in mph
Rolling/Skidding Friction - Correct answer-Approximately 0.348
Grade (G) - Correct answer-Grade of road
Stopping Sight Distance - Correct answer-SSD = 1.47Si t + (Si² − Sf²) / 30(f ± G)
©COPYRIGHT 2025,ALL RIGHTS RESERVED 2
