'Geometric delay' at an intersection differs from 'operational delay' in that:
Choose the correct answer
Geometric delay is always larger
Geometric delay from alignment/geometry (must slow for curve); operational delay from traffic/control (signals, conflicts)
They are identical (same definition)
Geometric delay only occurs in rural areas
Correct Answer
B. Geometric delay from alignment/geometry (must slow for curve); operational delay from traffic/control (signals, conflicts)
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Geometric delay: delay due to geometric design (substandard radius, weaving, deceleration lane) — driver must slow below desired speed. Operational delay: due to traffic interactions (signals, stop signs, turning conflicts, congestion). Control delay = operational delay at signals/signs. IRC:64 and HCM separate these for LOS analysis.
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