Title
Consider/Discuss/Act on an Ordinance Establishing a Speed Limit on Coit Road Between US 380 and Virginia Parkway
Summary
COUNCIL GOAL: Operational Excellence
MEETING DATE: June 7, 2016
DEPARTMENT: Development Services/Engineering
CONTACT: Robyn Root, P.E., P.T.O.E., Traffic Engineer
Gary Graham, P.E., P.T.O.E., Traffic and CIP Engineering Manager
RECOMMENDED CITY COUNCIL ACTION:
• Approval of the Ordinance
ITEM SUMMARY:
• This Ordinance will establish a speed limit on Coit Road of 50 mph from Virginia Parkway to US 380.
BACKGROUND INFORMATION:
• The east lanes of Coit Road have been constructed extending Coit Road northward from Virginia Parkway to US 380. These lanes of Coit Road have been opened to traffic and thus a speed limit needs to be established on this new section of Coit Road.
• When developing a recommendation for a speed limit, the following factors should be considered:
o The design speed of the roadway.
o The measured 85th percentile speed.
o The established speed limit on adjacent section of the same roadway.
o The adjacent land uses along the roadway.
• The design speed of the roadway is 45 mph. However, due to roadway geometry, there are no horizontal or vertical curves limiting vehicle speeds.
• Currently, there is undeveloped land along majority of this section of Coit Road but the area is zoned as residential with some components of retail and commercial. There is an existing residential development on the southeast corner of Coit Road and US 380 named Prestwyck.
• A speed study was conducted in March 2016 along this new section of Coit Road. The 85th percentile speeds were taken at several different locations along the corridor and was determined to range from 49 mph to 58 mph.
• Coit Road is the jurisdictional boundary between the City of McKinney and the City of Frisco. Therefore the McKinney Engineering Staff worked with Frisco Engineering Staff to develop a consensus of the proposed speed limit for this section of Coit Road.
• In order to create a more uniform traffic flow and reduce passing and the above factors, a proposed speed limit of 50 mph is recommended on Coit Road from Virginia Parkway to US 380.
• As additional development occurs in the area, new speed studies will be conducted to confirm if the 50 mph speed limit is appropriate or if it should be lowered.
FINANCIAL SUMMARY:
• The installation of the speed limit signs associated with this agenda item is in the operating budget of the Engineering Department.
BOARD OR COMMISSION RECOMMENDATION:
• N/A