Guidelines for the Preparation of Transportation Impact Studies - 8th ...
Guidelines for the Preparation of Transportation Impact Studies - 8th ... Guidelines for the Preparation of Transportation Impact Studies - 8th ...
5.3.1 Provide a map or maps, consistent with those summarizing existing conditions as discussed in 4.2 and 4.3, to show: • existing traffic and transit volumes (see 4.2 and 4.3); • background changes to traffic and transit volumes over the study period (see 4.4); • site-generated traffic and transit volumes (see 5.1); • changes to traffic and transit volumes which are anticipated to result from TDM measures (see 5.2); • net total traffic and transit volumes. A map or maps should be prepared for each time period (identified in 4.1.1 and 4.1.2) and for each scenario (see 5.1.9 and 5.1.10) being evaluated. Where practical, present all the information for a given time period or scenario on two maps, one for traffic volumes and one for transit volumes, using parentheses or other devices to identify the different volumes and adjustments. TISGUIDE8.WPD September 1, 2007 page 16
6.0 Evaluation of Transportation Impacts and Identification of Transportation System Changes Needed to Mitigate these Impacts Sections 6.1 and 6.2 outline the elements of the TIS useful in identifying and evaluating the impacts of site-generated traffic and transit demand on road and transit performance. Transportation system and service changes and other measures required to ensure acceptable operation of the transportation system are also identified. 6.1 Evaluation of Impacts of Site Generated Traffic Demand 6.1.1 Evaluate those signalized and unsignalized intersections which will be noticeably affected (see 3.2.1) by site-generated traffic volumes for all relevant time periods and scenarios. The analysis should include volume/capacity ratios, average and 95 th percentile queue lengths, and average delay for: • existing traffic; • existing traffic adjusted to account for background changes; and • existing traffic adjusted for background changes plus forecast site-generated traffic demand after accounting for the effects of the proposed TDM plan and other adjustments. Provide a table or tables showing volume/capacity ratios, average and 95 th percentile queue lengths, and average delay for all movements at all study intersections. Discussions with Halifax Regional Municipality staff would be useful in confirming the scope of the analysis, the suitability of alternative methods and assumptions for performance and queuing analyses, and the potential need for supplementary surveys or analyses. 6.1.2 Provide documentation in an appendix to the TIS of all assumptions used in the performance analysis concerning lane configuration/use, pedestrian activity, saturation flows, traffic signal cycle length, phasing and timing, use of the inter-green phase, and other relevant parameters. Existing signal timings should be assumed in the performance analysis. Signal timing modifications may be considered as a measure to address capacity or performance deficiencies. 6.1.3 Evaluate future pedestrian activity associated with the development and related implications for signal warrant calculations and signal timing requirements to provide pedestrian road-crossing opportunities. Of particular interest are pedestrian connections to transit services. TISGUIDE8.WPD September 1, 2007 page 17
- Page 1 and 2: Guidelines for the Preparation of T
- Page 3 and 4: Halifax Regional Municipality Guide
- Page 5 and 6: FOREWORD A transportation impact st
- Page 7 and 8: 1.0 Introduction: Transportation, D
- Page 9 and 10: 2.0 General TIS Requirements In thi
- Page 11 and 12: 3.0 Description of the Development
- Page 13 and 14: • on-street parking spaces and pa
- Page 15 and 16: or appears to be inconsistent, perh
- Page 17 and 18: 5.0 Estimation of Travel that will
- Page 19: • other factors that may be expec
- Page 23 and 24: idership/usage will be increased 5
- Page 25 and 26: to assess effects on pedestrian cro
- Page 27 and 28: 7.0.5 Evaluate the potential for ac
- Page 29 and 30: APPENDIX A Transportation Impact St
- Page 31 and 32: Supplementary Information for the T
- Page 33 and 34: Existing Traffic: Halifax Regional
- Page 35 and 36: All other inputs should be based on
5.3.1 Provide a map or maps, consistent with those summarizing existing conditions as<br />
discussed in 4.2 and 4.3, to show:<br />
• existing traffic and transit volumes (see 4.2 and 4.3);<br />
• background changes to traffic and transit volumes over <strong>the</strong> study period (see 4.4);<br />
• site-generated traffic and transit volumes (see 5.1);<br />
• changes to traffic and transit volumes which are anticipated to result from TDM measures<br />
(see 5.2);<br />
• net total traffic and transit volumes.<br />
A map or maps should be prepared <strong>for</strong> each time period (identified in 4.1.1 and 4.1.2) and<br />
<strong>for</strong> each scenario (see 5.1.9 and 5.1.10) being evaluated. Where practical, present all <strong>the</strong><br />
in<strong>for</strong>mation <strong>for</strong> a given time period or scenario on two maps, one <strong>for</strong> traffic volumes and<br />
one <strong>for</strong> transit volumes, using paren<strong>the</strong>ses or o<strong>the</strong>r devices to identify <strong>the</strong> different volumes<br />
and adjustments.<br />
TISGUIDE8.WPD September 1, 2007 page 16
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