08-07-2017 Council Packet - Laserfiche WebLink

Home Search

Arlo Lane Stop Sign Supplemental Review 2 | Page Table 1 – Traffic Volume Summary Time Period Wednesday 4/19/2017 Friday 6/9/2017 Saturday 6/10/2017 Sunday 6/11/2017 Monday 6/12/2017 Tuesday 6/13/2017 Arlo Lane - West of Joseph Ct ADT 265 313 181 270 311 278 AM Peak Hour 23 15 11 25 22 18 PM Peak Hour 38 41 17 24 29 25 Arlo Lane – East of Highland Drive ADT 475 603 444 521 595 610 AM Peak Hour 50 40 32 62 33 36 PM Peak Hour 68 63 34 49 55 66 As can be seen in Table 1, the new traffic volumes continue to be similar in comparison to other local City streets which typically range from 250 to 750 vehicles per day. These traffic counts are typical for residential street volumes and are far short of the volumes required to meet all- way Stop Sign warrants. Table 3 – Speed Data Summary Wednesday 4/19/2017 Friday 6/9/2017 Saturday 6/10/2017 Sunday 6/11/2017 Monday 6/12/2017 Tuesday 6/13/2017 Arlo Lane - West of Joseph Ct 85% Speed 25 mph 30 mph 31 mph 29 mph 28 mph 29 mph Highest Recorded Speed 36 mph (2) 51 mph (2) 47 mph (1) 45 mph (2) 35 mph (1) 37 mph (1) % Over Speed Limit 9% 12% 20% 12% 8% 10% Arlo Lane – East of Highland Drive 85% Speed 25 mph 30 mph 31 mph 29 mph 29 mph 30 mph Highest Recorded Speed 36 mph (2) 51 mph (7) 53 mph (1) 51 mph (3) 52 mph (1) 43 mph (1) % Over Speed Limit 9% 14% 19% 12% 11% 17% The 85th percentile speed is the speed at which most (85%) of the drivers are traveling. The posted speed limit near the 85th percentile is the maximum safe and reasonable speed. Studies show that traveling faster or slower than this value can increase the chances of being in a crash. As indicated in Table 2, the calculated 85th percentile speed is near the posted 30 mph speed limit. Based on this data, the existing posted 30 mph speed limit would be considered appropriate.