Laserfiche WebLink
New Lake Elmo Elementary School & Oak-Land Middle School August 1, 2024 Transportation Study Page 13 For side-street stop-controlled intersections, special emphasis is given to providing an estimate for the level of service of the side-street approach. Traffic operations at an unsignalized intersection with side-street stop control can be described in two ways. First, consideration is given to the overall intersection level of service. This takes into account the total number of vehicles entering the intersection and the capability of the intersection to support these volumes. Second, it is important to consider the delay on the minor approach. Since the mainline does not have to stop, the majority of delay is attributed to the side-street approaches. It is typical of intersections with higher mainline traffic volumes to experience high-levels of delay (i.e., poor levels of service) on the side-street approaches, but an acceptable overall intersection level of service during peak hour conditions. Schools generally have higher peaking characteristics as compared to the typical roadway network during the a.m. and p.m. peak hours (i.e., traffic on/near school grounds tend to be busy for a short period of time close to school start and end times). The study focused on analyzing and publishing findings for the 60-minute interval, which is the traffic industry standard. Additionally, peak 15-minute intervals were reviewed to provide context on any operational issues occurring immediately before or after school start and end times. Results of the existing intersection capacity analysis, shown in Table 4, indicate that all study intersections, other than the 10th Street/Keats Avenue intersection, currently operate at an acceptable overall LOS D or better during the a.m., school departure, and p.m. peak hours. Table 4. Existing Intersection Capacity Analysis Intersection A.M. Peak Hour (3) School Departure Peak Hour (3) P.M. Peak Hour LOS Delay LOS Delay LOS Delay 10th Street/Keats Avenue (1) B 14 sec. C 17 sec. F 63 sec. 10th Street/Lake Elmo Avenue (1) B 14 sec. C 16 sec. D 27 sec. Lake Elmo Avenue/Hudson Boulevard (2) A/A 7 sec. A/A 7 sec. A/A 10 sec. 10th Street/Manning Avenue C 26 sec. C 23 sec. D 38 sec Manning Avenue/Oak-Land MS North Access (2) A/A 6 sec. A/A 5 sec. A/A 6 sec. Manning Avenue/Oak-Land MS South Access B 11 sec. A 6 sec. A 7 sec. (1) Indicates an all-way stop control, where the overall LOS and delay are shown. (2) Indicates an unsignalized intersection with side-street stop control, where the overall LOS is shown followed by the worst side-street approach LOS. The delay shown represents the worst side-street approach delay. (3) The school a.m. and p.m. peak hours are defined as 7:00 – 8:00 a.m. and 2:00 – 3:00 p.m. respectively. The school a.m. peak hour generally coincides with the a.m. peak hour of the adjacent roadway network.