A development to be surveyed should appear to be economically viable. That is, it should look like the business or other land use is economically healthy as represented by trips to and from the building and occupancy of the parking facilities. Relatively empty parking lots, restaurants with only a few tables occupied, and stores with few customers are all signs of a development that is not economically healthy and not representative of what a developer would want to develop. Ability to Isolate and Survey Site It should be possible to isolate the survey site and each land use to permit accurate complete cordon, door, and/or driveway counts and interviews covering all person and modes. It is also necessary to be able to conduct counts and conduct interviews at a site without the possibility of double-counting or missing trips. The data collection program should be able to isolate the trips to and from the development. should be locations where persons making trips to/from the site can be counted or interviewed to determine primary mode of travel. There should be no through trips across the site. Where tube traffic counters are to be used, the design of external access points should be such that mechanical counting techniques will produce accurate vehicle counts (e.g., short driveway throats make it difficult to place tube counters to work properly), or if not, manual or video counts should be employed. Similarly, if video counters are used, all movements to/from the site should be clearly visible and distinguishable by mode of travel at the cordon boundary. Any trips using parking or access points that are shared with buildings or land uses not intended to be incorporated in the survey should be included so they could be subtracted to yield only trips from the targeted building or land use. In most cases, shared parking or access will increase the necessary size of the survey crew; this may make a survey of such a site infeasible. Limited Number of Count and Interview Locations The site should have a limited (i.e., a relatively small number) of access points in order to limit the cost to collect counts and interviews. Safe and Interview Locations Locations to be used for survey personal to conduct counts (pedestrians, bicyclists, transit boardings and alightings, or vehicles) should be safe for both survey personnel and passersby. It should not be necessary to arrange for elaborate safety provisions just to afford minimal safety. No Through Trips
A development to be surveyed should appear to be economically viable. That is, it should look like the business or other land use is economically healthy as represented by trips to and from the building and occupancy of the parking facilities. Relatively empty parking lots, restaurants with only a few tables occupied, and stores with few customers are all signs of a development that is not economically healthy and not representative of what a developer would want to develop. Ability to Isolate and Survey Site It should be possible to isolate the survey site and each land use to permit accurate complete cordon, door, and/or driveway counts and interviews covering all person and modes. It is also necessary to be able to conduct counts and conduct interviews at a site without the possibility of double-counting or missing trips. The data collection program should be able to isolate the trips to and from the development. should be locations where persons making trips to/from the site can be counted or interviewed to determine primary mode of travel. There should be no through trips across the site. Where tube traffic counters are to be used, the design of external access points should be such that mechanical counting techniques will produce accurate vehicle counts (e.g., short driveway throats make it difficult to place tube counters to work properly), or if not, manual or video counts should be employed. Similarly, if video counters are used, all movements to/from the site should be clearly visible and distinguishable by mode of travel at the cordon boundary. Any trips using parking or access points that are shared with buildings or land uses not intended to be incorporated in the survey should be included so they could be subtracted to yield only trips from the targeted building or land use. In most cases, shared parking or access will increase the necessary size of the survey crew; this may make a survey of such a site infeasible. Limited Number of Count and Interview Locations The site should have a limited (i.e., a relatively small number) of access points in order to limit the cost to collect counts and interviews. Safe and Interview Locations Locations to be used for survey personal to conduct counts (pedestrians, bicyclists, transit boardings and alightings, or vehicles) should be safe for both survey personnel and passersby. It should not be necessary to arrange for elaborate safety provisions just to afford minimal safety. No Through Trips