1994 06-20 CCP - Laserfiche WebLink

Home

Memorandurn May 19, 1994 Page 5 A: four-way intersection with."two-way stop control and one approach lane:in each direction can result in.stop controlled approaches operating at. LOS. F with a relatively small amount of traffic: Therefore, LOS E or F is not necessarily the equivalent of extremely high traffic volumes. The.. LOS designation is given based on an average amount of.:delay per vehicle: arriving. at an intersection. For example; a vehicle arriving at an intersection. an a green light will `have no delay, while a vehicle arriving when the light turns yellow may have a 60 to 90.second delay. These delays are averaged .for each movement. and then for the intersection as a whole to determine an loVerall level of service. LOS F equates to an average delay of 6Q seconds or more. LOS A equates to average delay of 5 seconds or • less. To demonstrate .the information provided by this analysis; the intersection of County Road E the main entrance to Wal-Mart and the proposed project was:chosen as an example. The overall intersection at build -out is expected to operate At LOS D during the pm peak hour. However,. the.westbound through movement is expected to operate as LOS C: Thepriority in signal timing is given to the rn.ajor arterials to promote the smooth. flow of through traffic, while longer delays are considered more tolerable on side streets and driveways. Table 3 (p. 13) of the BIKO Associates memo Was prepared for the purpose of showing the locations where either a change in capacity or traffic control will be needed to handle existing and projected traffic at an acceptable LOS. Table 1 below shows the 1996 and build -out LOS for the signalized access and the: ramp intersections.along County Road E: The. LOS of the individual movements which carry most Vadnais Heights residents bound for home during. the prn peak hour are shown separately for each intersection. Table 1 1996 and Build -Out Scenarios Level of Service County Road E Intersections. East Ramp West Ramp Main Access • 1996 C C C Build -Out* D D D Northbound.. Left - E southbound. Right - E Westbound Thru C Westbound Thru - E Westbound Thru - 13 * Includes build -out of Wal-Mart site and Fontana Square site, as well as all other corridor development potential. Seasonal Variation of Trip Generation and Traffic Operations With any retail development of significant size, oneexpects seasonal peaks of activity during the holiday shopping season and other times throughout the year to a lesser extent. The overlap