Traffic Control Device - Intersection of Lafayette & Wayne - Revise Stop Signs

Home Browse Search

Collision Data Three years of collision records were accessed in the Aries portal (November 2013- 2016). Figure 2 illustrates this data categorized by the manner of collision, with the types susceptible to correction by four-way stops shaded red. Of the eighteen incidents reported, the eleven most recent collisions occurred over the span of a single year. 14 12 N c 10 0 8 u w 0 6 a, a E 4 3 Z 2 0 LEFT TURN LEFT/RIGHT TURN OPPOSITE REAR END RIGHTANGLE SAME DIRECTION DIRECTION SIDESWIPE SIDESWIPE Manner of Collision Figure 2 Collisions (2014-2016) Recommendation The eleven collisions recorded over the most recent year, nine of which were susceptible to correction by a four-way stop, well exceed the five crash threshold set forth in the IMUTCD 2011. The volumes observed over a five hour period also well exceed the 300 and 200 vehicle per hour thresholds for the major and minor street approaches respectively (Table 1). Though eight hours of recent data are not available, traffic counts from February 2010 can be referenced to estimate the traffic volume on off-peak hours. The three hours from 12:00 PM to 2:00 PM (highlighted in Table 2) also meet the volume warrant. Though this data is not recent, it likely provides a conservative estimate of the present volume. A comparison of the on -peak volume recorded in 2010 and 2016 indicate traffic has increased by approximately 40% and 90% on the Wayne Street and Lafayette Boulevard approaches respectively. As a result, it can be reasonably argued that the 8 hour volume warrant is likely met. The observed traffic volume as well as the high rate of collision at this intersection indicate that all -way stop control is warranted at this location. The proposed recommendation is demonstrated in Figure 3. We deliver services that empower everyone to thrive!!