Which of the following statements about geometric delay are correct? Marks will

Question

Which of the following statements about geometric delay are correct? Marks will be deducted for incorrect choices.

geometric delay is partially attributable to the extra time taken as vehicles slow down to negotiate the roundabout and speed up again upon exiting

geometric delay is partially attributable to the extra time taken as vehicles travel a longer path through the intersection to negotiate the roundabout

geometric delay is not calculated by a SIDRA when analysing roundabout performance

all other things being equal, the geometric delay at a roundabout increases as the inscribed diameter of the roundabout increases

all other things being equal, the geometric delay at a roundabout decreases as the speed on the approach roads increases

all other things being equal, the geometric delay at a roundabout increases as the turning volumes increase

the geometric delay / vehicle is the same for vehicles that stop and don’t stop at the give-way line

geometric delay is partially attributable to the extra time taken as vehicles slow down to negotiate the roundabout and speed up again upon exiting

geometric delay is partially attributable to the extra time taken as vehicles travel a longer path through the intersection to negotiate the roundabout

geometric delay is not calculated by a SIDRA when analysing roundabout performance

all other things being equal, the geometric delay at a roundabout increases as the inscribed diameter of the roundabout increases

all other things being equal, the geometric delay at a roundabout decreases as the speed on the approach roads increases

all other things being equal, the geometric delay at a roundabout increases as the turning volumes increase

the geometric delay / vehicle is the same for vehicles that stop and don’t stop at the give-way line

Explanation / Answer

Correct Statements are :-

[A] The term "Geometric Delay has been used to describe the extra time required by vehicles as they slow to negotiate am intersection.

[E] On increasing the speed of the approach roads the geometric delay at the roundabout decreases.

[F] on increasing the turning volume the geometric delay at roundabout increases.

[G] the geometric delay / vehicle is the same for vehicles that stop and don’t stop at the give-way line

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