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Manager's Memo
To:
Mayor and City Council
From:
City Manager
Date:
March 13, 2015
Subject:
City Council Workshop
Discussion Items Continued

Discussion of Level of Service of Local Street System

All of Debary's local streets are rated at LOS D. It might be advisable for the Council to review our streets and determine if there are certain streets that should have a higher LOS.
The City's Comprehensive Plan; Policy Number 6.103, states "Pursuant to "concurrency requirements, the following regulatory level of service (LOS) standards will be used to determine whether facilities are adequate to serve new development:"

a. Road facilities:

1. Florida Intrastate Highway System (FIHS): as established by FDOT.
2. Balance of State Road System: as established by FDOT.
3. County Road System: D
4. Local Street System: D

Definitions of the different Level Of Services (LOS) are below.
A:  free flow. Traffic flows at or above the posted speed limit and motorists have complete mobility between lanes. The average spacing between vehicles is about 550 ft(167 m) or 27 car lengths. Motorists have a high level of physical and psychological comfort.

B: reasonably free flow. LOS A speeds are maintained, maneuverability within the traffic stream is slightly restricted. The lowest average vehicle spacing is about 330 ft(100 m) or 16 car lengths. Motorists still have a high level of physical and psychological comfort.

C: stable flow, at or near free flow. Ability to maneuver through lanes is noticeably restricted and lane changes require more driver awareness. Minimum vehicle spacing is about 220 ft(67 m) or 11 car lengths. Most experienced drivers are comfortable, roads remain safely below but efficiently close to capacity, and posted speed is maintained. Minor incidents may still have no effect but localized service will have noticeable effects and traffic delays will form behind the incident. This is the target LOS for some urban and most rural highways.

D: approaching unstable flow. Speeds slightly decrease as traffic volume slightly increase. Freedom to maneuver within the traffic stream is much more limited and driver comfort levels decrease. Vehicles are spaced about 160 ft(50m) or 8 car lengths. Minor incidents are expected to create delays. Examples are a busy shopping corridor in the middle of a weekday, or a functional urban highway during commuting hours. It is a common goal for urban streets during peak hours, as attaining LOS C would require prohibitive cost and societal impact in bypass roads and lane additions.

E: unstable flow, operating at capacity. Flow becomes irregular and speed varies rapidly because there are virtually no usable gaps to maneuver in the traffic stream and speeds rarely reach the posted limit. Vehicle spacing is about 6 car lengths, but speeds are still at or above 50 mi/h(80 km/h). Any disruption to traffic flow, such as merging ramp traffic or lane changes, will create a shock wave affecting traffic upstream. Any incident will create serious delays. Drivers' level of comfort become poor.[1] This is a common standard in larger urban areas, where some roadway congestion is inevitable.

F: forced or breakdown flow. Every vehicle moves in lockstep with the vehicle in front of it, with frequent slowing required. Travel time cannot be predicted, with generally more demand than capacity.

Cost/Revenue Analysis and Feasibility Study of a Shooting Range

Councilman Dwyer requested this item for discussion.

Review and Discussion of Roberts Rules of Order

Councilman Dywer requested this item for discussion.




 
 
City of DeBary, FL
16 Colomba Rd, DeBary, FL 32713
Phone: (386) 668-2040  Fax: (386) 668-4122