This three-leg intersection is a signalized crosswalk and is analyzed only for Signal Warrant 4.

Warrant #4. A total of 148 pedestrians were observed crossing Far Hills Avenue at Orchard Avenue during the 8 hour data collection periods. Due to the intersection being located in the middle of the Oakwood commercial district, a gap analysis was performed at the intersection despite the low number of observed pedestrians to understand the impact of pedestrian crossings without the existing signal.

Gap analysis was performed using a Poisson Distribution methodology to determine if an acceptable number of gaps are available to cross Far Hills Avenue at the AM, midday, and PM peak hours. Acceptable numbers of gaps to accommodate pedestrians are assumed to be one per minute (60 gaps per hour). The available number of gaps is dependent on total bidirectional volume on Far Hills Avenue, crossing distance from curb ramp to curb ramp (measured at 59 ft), and walking speed (3.5 ft/s was assumed). The available gaps during peak hours were calculated using the following equation:

The resulting number of gaps for each peak hour volume are shown in Figure 13A.

The gap analysis shows that the number of gaps to cross Far Hills Avenue at the intersection during peak hours are less than 3 gaps per hour. The acceptable number of gaps is 60 per hour (i.e., one opportunity to cross every minute). The calculations show that there is little to no opportunities to cross during the PM peak hour. The existing traffic signal contributes significantly to providing adequate crossing time by stopping Bagley Road traffic through the use of available push buttons. Warrant #4 is satisfied.

FIGURE 13A: GAP ANALYSIS (59 FT CROSSING DISTANCE)