An intersection has two lanes on each approach of the major street and two lanes on...

  

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An intersection has two lanes on each approach of the major street and two lanes on each approach of the minor street. The major road speed limit is 55 mph. Summary traffic volume data is provided in the following table. Using these data. determine whether a traffic signal is warranted. Be sure to indicate the threshold values you used for assessing Condition A and Condition B. Each hour during which the threshold is exceeded should be identified with an X. Be sure to identify which warrant(s) apply as appropriate. 8-Hour 8-Hour Combination of Warrant, Warrant, Condition A & Condition B Condition Condition A Met? B Met? (Major (Major Major = = Street Minor Street vph) vph) 8-Hour Warrant, 8-Hour Warrant, Total Highest Approach (Minor (Minor Condition A Met? Condition B Met? Volume Volume (Major - vph) (Major- vph) Time (veh/hr) (veh/hr) vph) vph) (Minor- vph) (Minor= vph) 7:00-8:00 620 150 8:00-9:00 700 160 9:00- 750 170 10:00 10:00- 600 135 11:00 11:00- 500 120 12:00 12:00- 420 110 13:00 13:00- 400 100 14:00 14:00- 540 115 15:00 15:00- 580 160 16:00 16:00- 600 160 17:00 17:00- 620 185 18:00 18:00- 350 80 19:00 Condition A-Minimum Vehicular Volume Number of lanes for moving traffic on each approach Minor Street Vehicles per hour on major street (total of both approaches) Vehicles per hour on higher-volume minor-street approach (one direction only) 100% 80% 70% 56% 100% 80% 70% 56% Major Street 1.................. 1.................. 2 or more... 1.................. 2 or more... 2 or more... 1 2 or more.... 400 500 400 350 280 600 480 420 336 600 480 420 336 500 150 120 105 84 150 120 105 84 350 280 200 160 140 112 200 160 140 112 Basic minimum hourly volume. Used for combination of Conditions A and B after adequate trial of other remedial measures. May be used when the major-street speed exceeds 70 km/h or exceeds 40 mph or in an isolated community with a population of less than 10,000. May be used for combination of Conditions A and B after adequate trial of other remedial measures when the major- street speed exceeds 70 km/h or exceeds 40 mph or in an isolated community with a population of less than 10,000. Condition B-Interruption of Continuous Traffic Number of lanes for moving traffic on each approach Vehicles per hour on major street (total of both approaches) Vehicles per hour on higher-volume minor-street approach (one direction only) 100% 80% 70% 56%* 75 60 53 42 Major Street Minor Street 100% 80% 70% 56% 1............... 1................... 750 600 525 420 2 or more... 1.................. 900 720 630 504 75 60 53 42 2 or more... 2 or more... 900 720 630 504 100 80 70 56 1................... 2 or more.... 750 600 525 420 100 80 70 56 Basic minimum hourly volume. Used for combination of Conditions A and B after adequate trial of other remedial measures. May be used when the major-street speed exceeds 70 km/h or exceeds 40 mph or in an isolated community with a population of less than 10,000. May be used for combination of Conditions A and B after adequate trial of other remedial measures when the major- street speed exceeds 70 km/h or exceeds 40 mph or in an isolated community with a population of less than 10,000. An intersection has two lanes on each approach of the major street and two lanes on each approach of the minor street. The major road speed limit is 55 mph. Summary traffic volume data is provided in the following table. Using these data. determine whether a traffic signal is warranted. Be sure to indicate the threshold values you used for assessing Condition A and Condition B. Each hour during which the threshold is exceeded should be identified with an X. Be sure to identify which warrant(s) apply as appropriate. 8-Hour 8-Hour Combination of Warrant, Warrant, Condition A & Condition B Condition Condition A Met? B Met? (Major (Major Major = = Street Minor Street vph) vph) 8-Hour Warrant, 8-Hour Warrant, Total Highest Approach (Minor (Minor Condition A Met? Condition B Met? Volume Volume (Major - vph) (Major- vph) Time (veh/hr) (veh/hr) vph) vph) (Minor- vph) (Minor= vph) 7:00-8:00 620 150 8:00-9:00 700 160 9:00- 750 170 10:00 10:00- 600 135 11:00 11:00- 500 120 12:00 12:00- 420 110 13:00 13:00- 400 100 14:00 14:00- 540 115 15:00 15:00- 580 160 16:00 16:00- 600 160 17:00 17:00- 620 185 18:00 18:00- 350 80 19:00 Condition A-Minimum Vehicular Volume Number of lanes for moving traffic on each approach Minor Street Vehicles per hour on major street (total of both approaches) Vehicles per hour on higher-volume minor-street approach (one direction only) 100% 80% 70% 56% 100% 80% 70% 56% Major Street 1.................. 1.................. 2 or more... 1.................. 2 or more... 2 or more... 1 2 or more.... 400 500 400 350 280 600 480 420 336 600 480 420 336 500 150 120 105 84 150 120 105 84 350 280 200 160 140 112 200 160 140 112 Basic minimum hourly volume. Used for combination of Conditions A and B after adequate trial of other remedial measures. May be used when the major-street speed exceeds 70 km/h or exceeds 40 mph or in an isolated community with a population of less than 10,000. May be used for combination of Conditions A and B after adequate trial of other remedial measures when the major- street speed exceeds 70 km/h or exceeds 40 mph or in an isolated community with a population of less than 10,000. Condition B-Interruption of Continuous Traffic Number of lanes for moving traffic on each approach Vehicles per hour on major street (total of both approaches) Vehicles per hour on higher-volume minor-street approach (one direction only) 100% 80% 70% 56%* 75 60 53 42 Major Street Minor Street 100% 80% 70% 56% 1............... 1................... 750 600 525 420 2 or more... 1.................. 900 720 630 504 75 60 53 42 2 or more... 2 or more... 900 720 630 504 100 80 70 56 1................... 2 or more.... 750 600 525 420 100 80 70 56 Basic minimum hourly volume. Used for combination of Conditions A and B after adequate trial of other remedial measures. May be used when the major-street speed exceeds 70 km/h or exceeds 40 mph or in an isolated community with a population of less than 10,000. May be used for combination of Conditions A and B after adequate trial of other remedial measures when the major- street speed exceeds 70 km/h or exceeds 40 mph or in an isolated community with a population of less than 10,000.

Answer rating: 100% (QA)

Based on the information supplied we must evaluate Conditions A and B in order to decide whether a traffic light is necessary Requirement A Minimum Ca... View the full answer