Traffic conclusions

Our surveys of car, bicycle and pedestrian traffic along the section of Drummond Street between Curtain and Fenwick Streets identified three significant patterns.

20131117 traffic overall

First is the overall picture. The street has light traffic flow and low speed car usage, and is well used by both bicycles and pedestrians.[1]

  • 1,592 cars use the street per day. We observed one car journey every 54 seconds, driving at an average speed of 38km/hr.
  • 399 bicycles use the street per day. We observed one bicycle journey every 216 seconds, riding at an average speed of 26km/hr.
  • 1,071 pedestrians use the street per day. We observed one pedestrian journey every 81 seconds, walking at an average speed of 6km/hr.
  • In every hour, cars spend 14 minutes driving through the street, each taking on average 12 seconds to travel between Curtain and Fenwick Streets.
  • In every hour, bicycles spend 5 minutes riding through the street, each taking on average 18 seconds to travel between Curtain and Fenwick Streets.
  • In every hour, pedestrians spend 54 minutes walking through the street, each taking on average 72 seconds to travel between Curtain and Fenwick Streets.

20131117 traffic peak

Second, is the difference between peak periods and off peak periods. Both car and bicycle traffic are significantly heavier during peak periods, particularly heading south towards the city during the weekday morning peak. Pedestrian traffic is fairly constant.

  • In off peak periods, we observed one car journey every 75 seconds travelling at an average speed of 36km/hr.
  • In peak periods, we observed one car journey every 17 seconds travelling at an average speed of 44km/hr.
  • In off peak periods, we observed one bicycle journey every 306 seconds travelling at an average speed of 20km/hr.
  • In peak periods, we observed one bicycle journey every 66 seconds travelling at an average speed of 29km/hr.
  • Pedestrian traffic is generally consistent. We observed one pedestrian journey every 81 seconds travelling at an average speed of 6km/hr.

0022 traffic arrivals

And third is the percentage of journeys that start or finish within the site area, compared with those that pass through. Only a small percentage of car, bicycle and pedestrian journeys start or finish within the site area.

  • 12% of car journeys are arrivals or departures. We observed 188 arrivals and departures per day, of 1,592 cars total.
  • 10% of bicycle journeys are arrivals or departures. We observed 41 arrivals and departures per day, of 399 bicycles total.
  • 27% of pedestrian journeys are arrivals or departures. We observed 287 arrivals and departures per day, of 1,071 pedestrians total.

So, the conclusions our research and analysis have allowed us to reach:

  • Drummond Street is subject to light car traffic. It is well used by bicycles and pedestrians.
  • Car and bicycle usage during peak periods are significantly higher than off peak periods. Pedestrian use is consistent.
  • A small percentage of car, bicycle and pedestrian journeys start or finish within the site area.

Footnotes:

[1] According to research undertaken by Donald Appleyard, light traffic flow equates to 2,000 vehicles per day and heavy traffic flow equates to 16,000 vehicles per day. Donald Appleyard; Liveable Streets; University of California Press; Berkeley; 1981

Image sources:

  1. Overall picture. Information collated for all images by, and copyright belongs to, Mihaly Slocombe.
  2. Peak and off-peak.
  3. Arrivals and departures.
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