Trip Generation for New Development Projects

trip generation

Trip Generation for New Development Projects

Trip Generation is the first step in the conventional four-step transportation forecasting process (followed by trip distribution, mode choice, and route assignment), widely used for forecasting travel demands. It predicts the number of trips originating in or destined for a particular traffic analysis zone. The peak hour trips are distributed to the points of ingress and egress for the site.

The process for a typical trip generation study includes a selection of several (usually four to seven) sites that can be categorized as having the same land use. Next, data regarding various characteristics of these sites is collected. Data collection varies according to the specifics of the subject land use. The collected data could include several different physical parameters attributed to the subject site such as location, lot size, structure size, number of employees, and other units of interest. Individual sites are isolated and traffic counters are placed at every entrance and exit point of these sites. The traffic counts are taken for a period of up to seven days. The results of these counts are compiled to determine daily and peak hour trip generation rates per the independent variable(s) for the subject use. Depending on the specific land use, the independent variable(s) may be square feet, acre, number of employees, dwelling units, rooms, etc. Additional data include the proportion of trips made in the morning and afternoon peak periods and the proportion of peak trips that entered and exited the sites.

Trip Generation

Scope of Services Offered:

  • Minor traffic analysis: Trip generation Pre Vs. Post total & peak AM/PM trips analysis suitable for calculating the need for the turn lane, traffic signal or basic driveway.
  • Traffic count studies
  • FDOT/ County driveway connection permits

trip generation

A.M/P.M Peak hour trips graph                                        A.M/P.M Peak hour trips chart

ITE MANUAL for Trip Generation Reports


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