13. A network of fixed-time traffic signals operate on the same cycle length wit
ID: 1866537 • Letter: 1
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13. A network of fixed-time traffic signals operate on the same cycle length with an offset of "0" in central business districts. 14· The use of inductance loops is the primary means of detecting traffic. 15. In a coordinated traffic signal system, the detectors for the main street through-movements determine the cycle length for the system. 16. A parking lot has one exit lane. During the PM peak hour, 180 vehicles exit. If it takes the cashier 15 seconds to process a vehicle, then the probability (P = q/Q) that no vehicle is waiting in the lane is 75%. 17. The Degree of Curvature is customarily defined as the central angle D subtended by a chord of 100 feet Horizontal curves provide a transition between two tangent sections of roadway and changes the direction of a vehicle. 18. Vertical curves are either Sag, Crest or Spiral and simply conform the design of the roadway to the topography 19. 20. Super elevation is tilting the roadway to help offset centripetal forces developed as the vehicle goes around a curve. Along with friction, they are what keeps a vehicle from going off the road. 21. (5pts) List at least six ways to regulate on-street parking. 22. (Spts) To achieve maximum highway capacity, list six ideal roadway conditions.Explanation / Answer
(13) Answer:- False
(14) Answer:- True
(15) Answer:- True
(16) Answer:- False
(17) Answer:- True
(18) Answer:- True
(19) Answer:- False
(20) Answer:- True
(21) Answer:- Six ways to regulate on - street parking:-
(i) Sign for regulate time a vehicle may park
(ii) Sign of no parking
(iii) Arrows sign which indicates direction
(iv) Sign for specific time for no parking
(v) Sign for stop non vehicular property on street parking
(vi) Sign for fees per vehicle for parking.
(22) Answer:- Six ideal roadway condition to achieve maximum highway capacity:-
(i) Lane width = 3.5 meter
(ii) Flat terrain
(iii) No roadside developments
(iv) Very low side friction
(v) A divided highway
(vi) Shoulders of effective width of 1 meter for each carriage way.
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