Text from 'Transportation Management Plans Effectiveness Study' PowerPoint Presentation
Slide 1
Transportation Management Plans
Effectiveness Study
Caltrans Logo
Slide 2
"Previous Successes"
OLYMPIAD XXIII - 1984
- Projections of Huge Traffic Jams
- Images of Stranded Tourists Missing Events
- Residents "Scared" into Leaving Town
- Los Angeles Praised
- "Great Planning!"
San Francisco Earthquake - 1989
- No Advance Warning
- Motorists / Congestion Disappeared
- Diversions Did Not Account for Total
- "Where Did They All Go??"
- San Francisco Praised
- "Great Work!"
"People are Resilient AND Resourceful!"
Speaker Notes: In one, we just scared people away. In the second, people disappeared (not telecommuting, not taking alternate routes, not taking alternate modes,....)but came back as soon as the Bay Bridge opened.
We certainly want to use our TMP strategies, but we want to be cost-effective.
- Shifts in Work Week Scheduling
- Major Firms Provided Trans., Telecommuting, etc
- Truck Traffic Reduced during Peaks
- Rescheduled Highway Maint.
- Exclusive Bus Lanes
- Restricted Parking
- 24-Hour Ramp Metering
- Increased Usage of CMS
Slide 3
Study Purpose
- Evaluate District compliance with Guidelines
- Evaluate Typical Measures of Effectiveness
- Determine Most Effective Strategies
- Evaluate Cost versus Benefit
- Establish Lessons Learned
- Formulate Recommendations to Improve
- TMP Process / Modify Guidelines
Slide 4
Caltrans' Mission - To Improve Mobility Across California
8 of 15 of the Most Congested Cities are in California
Graphic from newspaper showing that eight cities in California are considered the most congested including: Los Angeles, San Fransisco-Oakland, San Diego and Sacramento.
Newspaper article headline reads 'Stuck in Traffic Rut', 'Bay Area Commute Second Worst in Nation'
Caltran worker says, "We must get the most out of the roads we have before building any new ones...well, duh!"
Slide 5
What's the Policy?
Deputy Directive 60 (Eff. 2000)
Caltrans' commitment is to: Minimize motorist delays for ALL activities on the State highway system without compromising public or worker safety, or the quality of the work being performed.
Construction, Encroachment Permits, Maintenance, Special Events, 100% Compliance with varying levels of treatment...
Slide 6
TMP Categories & Strategies
"Blanket" TMP | "Minor" TMP (Majority) | "Major" TMP (~5% of Projects) |
---|---|---|
No expected delays | Minimal impacts caused by work | Significant impacts caused by work |
Off peak | Lane closure charts required | Multiple TMP strategies |
Low volume roads | Some mitigation measures required | Multiple contracts |
Moving lane closures | ||
Portable CMS, FSP, TMT, Off-peak hours | Night Work, Portable & Fixed CMS, COZEEP, TMT, HAR, FSP, Gawk Screens.. | Public Awareness Campaigns, Fixed CMS, Extended Closures, Moveable Barriers, COZEEP, Detours, Reduced Lane Widths, Website, Helicopter.. |
Slide 7
Six TMP Strategies
- Public Information
- Motorist Information
- Incident Management
- Construction Strategies
- Demand Management
- Alternate Routes
TMP Costs for one Project were estimated as high as $7,000,000
Slide 8
How Would You Measure the Effectiveness of TMP Strategies?
- Overall Corridor
- Public Awareness
- Motorist Information
- Incident Management
Traffic Volume Counts, Floating Car Runs, Queue Lengths, Transit Ridership, Video Surveillance ..
Personal or Mail-in Surveys, No. of Calls or Website Hits, Public Meeting Attendance ..
Personal or Mail-in Surveys, Traffic Observations ..
Accident Response /Removal Time, Pre- / Post- Accident Rates ..
Slide 9
Measurement of Effectiveness (Cont.)
- Construction Strategies
- Demand Management
- Alternate Routes
Traffic Volume Counts, Floating Car Runs, Queue Lengths, Lane Closures Set / Picked Up on Time ..
Trip Mode Distribution, Park 'n' Ride Lot Usage, Carpooling Surveys, Employer Surveys ..
Traffic Volume Counts Floating Car Runs, Origin/Destination Surveys ..
Slide 10
Example of Corridor Effectiveness Results
District 07
I-10 Long-Life Pavement Project
- Vehicle Delay
- Traffic Volumes
- Length of Queues
- Safety
Example
Pre-Const. Estimate= 1,000,000 veh-hrs
Actual Delay= 16,000 veh-hrs
Traffic Demand on Interstate 10 was reduced by 57% (from 112,000 to 56,000 veh)
Initial Estimate = 44 miles
Actual Queue Length = 1.9 miles
No collisions or Employee injuries occurred in the Work Zone
Project Characteristics
- Fast-setting Hydraulic Concrete
- Closed 2 of 4 Lanes
- Extended 55-Hour Closures
Speaker Notes: PROJECT -- D7 - "LONG LIFE PAVEMENT AC" - EA# 1384UI ROUTE: I-710 (Long Beach Fwy - from SR 1 to SR 405) -- Start OCT 2002 -- 4.9-km segment
DELAY IF NO TMP IMPLEMENTED
Closures: Ten 55-hour Weekend closures (10PM Fri - 5 AM Mon) - stages 3 through 6 5 weeks NB / 5 weeks SB Fwy closure / Ramp closures full structural sections under OC to meet std. Vert. clearance
USED QUICKCHANGE MOVEABLE BARRIER
Slide 11
Actual Delay in Work Zone With TMP Strategies
District 07
I-10 Long-Life Pavement Project
Example
This line graph compares the projected delay in a work zone to the actual delay of a work zone on a given Saturday and Sunday (by hour). The actual delay during an afternoon rush hour, at it's peak on Saturday, was about 500 veh/hr, while the projected delay for the same time period was about 3400 veh/hr. On Sunday, the actual delay at peak rush hour was about 250 veh/hr, while the projected delay for that same period was almost 1000 veh/hr.
Delay in Minutes | Saturday | Sunday |
---|---|---|
Rte 30/ Foothill Blvd. | 9 | 2 |
Arrow Highway | 7 | 2 |
Holt Ave | 6 | 5 |
Mission Blvd | 3 | 2 |
Detour-Rte 60 Freeway | 20 | 34 |
Slide 12
But.. WHICH strategies led to these Great Results??
Slide 13
Most Effective Strategies - Public Awareness
"If you drive I-80, you might want to consider an alternate route this morning.."
"Which way should we go today..?"
Use HOV, Bus or Rail
Telecommute ..
Leave Earlier or Later ..
Slide 14
Instead of saying "Bridge Replacement Project" --...
Slogans AND Maps are Good and Easy to Remember..
Slide 15
District 04
Central Freeway Replacement Project
Project Characteristics
- Full-freeway Closure
- On- and Off-Ramps Closed
- Extensive Public Info Campaign
What Did the Public Notice?
Bar Graph: This chart provides information on which type of media the public notices.
The majority of the public, 78%, became aware of construction through newspaper articles followed by:
- TV news at 63%
- Freeway Signs at 50%
- Radio Traffic Reports at 42%
- Radio News Reports at 40%
- Word of Mouth at 37%
- Fold-Out Brochures at 32%
- Newspaper Ads at 15%
- Newsletters at 11%
- Billboards at 10%
- One-Page Flyers at 7%
- Banners at 6%
- Radio "Man in the Street" at 5%
- Other at 4%
- Pubic Meetings at 2%
Slide 16
Effective Construction Strategies
Lane Requirement Charts
- Based on "0" delay (Const.)
- 5 -15 minutes Delay (Maint.)
- According to District Traffic Managers - eliminates about 90% of potential delay
Problems
- Const. windows reduced
- More Night work (Urban/Rural)
- Comparative Quality?
- Comparative Safety?
Example of a ´Lane Requirement and Hours of Work´ Chart
Slide 17
Effective Construction Strategies (Cont.)
- Construction Staging
- Delay Penalty -- "Hammer" for the RE to charge the Contractor ($$$) for late pick-up of the closure .
- Extended Closures (e.g. 55-Hour Weekends or 72-Hour Weekdays)
- Narrow Lane Widths or Use of Shoulders (Peak Period)
- Moveable Barriers
- Contraglow ("Crossovers")
- Contingency Plans (Redundancy)
Speaker Notes: QUICKCHANGE MOVEABLE BARRIER --
USED ON I-710 AND I-10 PROJECTS IN D7
Slide 18
Extended Closure - Schedule, Cost & Delay Comparison
District 08
I-15 Devore PCCP Reconstruction
Project Characteristics
- Full-Freeway Closed - one direction
- Extended 72-Hour Closures
Example
Table
Schedule Comparison | Cost Comparison ($Millions) | ||||||
---|---|---|---|---|---|---|---|
Construction Scenario | Total Closures | Closure Hours | User Delay | Construction | Traffic Handling | Total | Max Delay (Min) |
72-Hour Weekday | 8 | 512 | 5.6 | 10.5 | 2.1 | 18.2 | 75 |
55-Hour Weekend | 10 | 550 | 14.2 | 12.5 | 2.6 | 29.3 | 196 |
1 Roadbed Continuous | 2 | 400 | 6.9 | 8.9 | 1.0 | 16.8 | 196 |
10-Hour Night-time | 220 | 2,200 | 4.9 | 19.1 | 1.3 | 25.3 | 36 |
Slide 19
Effective Strategies -- Demand Management
District 05
Cuesta Grade Project
Project Characteristics
- Addition of NB / SB Truck-Climbing Lanes
- Addition of Eight-foot Shoulders
- Construction of massive Retaining Walls
- No. of Peak Hour Trips - 4% Average Reduction
- Van Pool Riders - 313% Increase
- Bus Trips - 38% increase
- Strategy Cost= $3,300,000
- Park 'n' Ride Usage - 29% Increase
- Strategy Cost= $780,000
Slide 20
Alternate Route Strategies (Info obtained by Survey)
District 04
Central Freeway Replacement Project
Pie Chart: The most popular Alernate Route Strategy was to take a Different Freeway or Ramp Route - 76% followed by:
- City Streets Only - 11%
- No Longer Made Trip - 3%
- Public Transit - 2%
- Other - 2%
- Freeway / Transit - 3%
- Freeway / Streets - 2%
- Freeway / Fewer Trips - 1%.
Slide 21
Benefits vs. Costs?? "Bang for the Buck..."
District 11
I-5 / I-805 Widening Project
Project Characteristics
- Const. Separate Freeway Bypass
- Const. of new Interchange / Auxiliary Lanes
Example
TMP Strategies | Strategy Cost |
---|---|
Public Information | $607,500 |
Motorist Information | $835,000 |
Incident Management - COZEEP Cost = $1,700,000 |
$2,767,000 |
Construction Strategies | N/A |
Demand Management - Goal - Increase Van, Carpools, Bus by 5% /
Change worktime by 2% |
$400,000 |
Alternate Routes | $10,000 |
Compare- Cost vs. Delay Savings
Slide 22
Lessons Learned
Public Awareness: Most Effective Strategies facilitate Decision-Making by Driving Public to avoid Work Zone
- Public Awareness
- Newspapers
- TV News Spots
- Advance Signage
- Before Decision Points
- On Preceding Weeks / Weekends
Construction Strategies are also very effective
- Adhere To Lane Req'mt Charts
- Real-Time Statusing is Needed
- Penalties for Late Lane Opening
- Keep Lanes Open
- Narrow Lane Widths
- Shoulder Usage during Peak
Speakers Notes: Public Awareness -- Local Papers ets. to Hit Specific
Group
Businesses -- Flyers to Hit Large Group
Keep Lanes Open -- vs. Accident Rates..??
Slide 23
Lessons Learned (cont.)
Delay cost to motorists vs. TMP Costs
Consider Other Strategies:
- Extended Closures vs. Night Closures
- ("Get in & Stay in -- Get out & Stay out!")
- Close Coordination w/ Locals (Detours, Signals...)
- Shorten Contract Time through Incentives
Cost vs. Benefit
- $$$ on Work Zone Enforcement vs. Benefit ??
- $$$ on Brochures, Ads, Flyers, vs. Benefit ??
- (Media Coverage -- no cost for Major Projects)
- Costs of TMP Strategies vs. Delay costs
Other Issues
- Truck Restrictions / Closures on Parallel Routes
- Cumulative Impacts due to Multiple Projects
- (Combine closures when advantageous)
Speakers Notes: Truck Restrictions -- Narrow Lanes...Parallel Routes -- Obstructing Traffic in/out of state
Slide 24
Recommendations
- Streamlines TMP Process
- Blanket / Minor Projects (Standardized Forms)
- Major Projects (Brief, Standardized Reports)
- Critical Monitoring Activities - Delay Counts, Runs
- Proposed Studies
- Detailed TMP Effectiveness - Costs vs. Benefits
- Full-Freeway vs. Night Closures
- Enforcement Practices (Placement, etc.)
- Modify TMP Guidelines
- Standardize Monitoring Practices
- Standardize Reporting Practices
- Include Non-Motorized Considerations
Slide 25
Transportation Management Plans
Questions?
Slide 26
Handouts
- TMP Process
- Relationship between Project Characteristics and TMP Strategies
- Sample Unit Costs for TMP Strategies
- TMP Strategies—Unit cost Info
- Sample Worksheet—Blanket TMP
- Sample Delay Calculations
Slide 27
TMP Process
- Start
- Begin Programming Document (i.e. PID/PSR)
- Request TMP data sheet
- What kind of TMP is required?
- If a Major TMP is required, establish the TMP Team (Ops, Design, Engineering Services, Construction, CHP). Proceed to Step 5.
- If a Minor TMP is required, proceed to Step 5.
- If a Blanket TMP is required, proceed with Maintenance or Permits. End of process.
- Prepare TMP data sheet.
- Include TMP "$$$" in Programming Document.
- Project programmed—begin PA/ED stage.
- Refine TMP (Consider Traffic Impact and Constructability of Alternatives).
- Review TMP during PSE and start early TMP elements.
- Begin construction.
- Implement TMP.
- Monitor during construction.
- Modify TMP Strategies as needed.
- Actual delay exceeds threshold criteria.
- Prepare post-closure evaluation statement.
Slide 28
Relationship between Project Characteristics and Appropriate TMP Strategies
Project Characteristic | Public Information | Motorist Information | Incident Management | Const. Strategies | Demand Management | Alternate Routes |
---|---|---|---|---|---|---|
Duration | Long | Long | Long | |||
Length | Short | Short | Short | Long | ||
Phasing | ||||||
Urbanization | ||||||
(Non-Urbanized) | ||||||
Average Daily Traffic | ||||||
Reduced Capacity | ||||||
Viable Alternate Routes | ||||||
(No Alternate Routes) | ||||||
Traffic Delay | ||||||
Public / Media | ||||||
Political | ||||||
Affected Activity Centers | ||||||
Truck Percentage | ||||||
Business Impacts | ||||||
Increase in Accidents | ||||||
Steep Inclines | ||||||
Raised Medians |
Slide 29-30
Sample Unit Costs for TMP Strategies
The following 6 tables show rough costs for TMP Strategies.
Public Information
Strategy | "Rough" Costs |
---|---|
Hiring Consultant to do PR | $250,000+ |
Mailer (printing) | $0.50-$1.00/1,000 Mailers |
Mailer (cost to distribute) | $0.34/mailer |
Flyers (printing) | $0.10-$1.00/1,000 |
Flyers (cost to distribute by outside company) | $65/1,000 |
Billboards (+ $1,000 to transfer to vinal) | $2,500/month |
Press Release, Flyer, Bulletins (Develop, State Force) | $224 |
Newspaper Ad (Black and White, 1/4 pg.) | $6,000/day |
Newspaper Ad (Black and White, 1/2 pg.) | $12,000/day |
Newspaper Ad (Black and White, full pg.) | $18,000/day |
Newspaper Ad (Color, 1/4 pg.) | $8,000/day |
Newspaper Ad (Color, 1/2 pg.) | $14,000/day |
Newspaper Ad (Color, full pg.) | $22,000/day |
Press Conference/Public Meeting (Depends on Location/Room Size) | $0-1,000/day |
Open House | $3,000 |
Radio Ad (varies greatly) | $800/minute |
Telephone Hotline (+$250 Hook-up) | $45/month |
TV Commercial (Local Cable) | $4,000+ |
TV Commercial (Broadcast Channel) | $20,000+ |
Kiosk Rental (Small) | $1,200/month |
Kiosk Rental (Large) | $1,500/month |
Motorist Information
Strategy | "Rough" Costs |
---|---|
Permanent CMS | $300,000 |
Portable CMS | $10,000 |
Portable CMS (Rental) | $350/day, $1,500/week, $3,500/month |
Portable Highway Advisory Radio | $60,000/unit |
Highway Advisory Radio (Super) | $70,000/unit |
Ground Mounted Signs | $300 each |
Incident Management
Strategy | "Rough" Costs |
---|---|
COZEEP/MAZEEP (Two Officers at night) | $1,000/night |
Freeway Service Patrol (Including admin cost, contingency and CHP dispatch) | $119.07/hr (reg. Time), $116.45/hr (Over Time) |
Loop Detector | $300 each |
CCTV | $20,000 to $200,000 |
Traffic Management Team (State Force) | $0 |
Transportation Management Center (State Force) | $0 |
Helicopter Surveillance | $600/hour |
Mobile Command Center (State Furnished) | $0 |
Web Camera | Range between $20,000 to $200,000 |
Construction Strategies
Strategy | "Rough" Costs |
---|---|
K-Rail | $10-15/lf |
Movable Concrete Barrier (Rental) | $30/lf |
Movable Concrete Barrier—Transport Machine (Rental) | $100,000/6 months |
Gawk Screen (optional) | $3/lf |
Temporary Signal | $30,000 each |
Demand Management
Strategy | "Rough" Costs |
---|---|
Park & Ride | $50/hr |
Ramp Metering | $50,000/location |
Alternate Route
Strategy | "Rough" Costs |
---|---|
Traffic Control Officers | $50/hour |
Slide 31-33
The following 6 tables provide further details about the unit cost information for TMP Strategies (Source: TMP Effectiveness Study [Wilbur Smith, 1993]).
Public Information
Strategy | Unit Cost | Comment |
---|---|---|
Brochures and Mailers | Cost could range between $.40 to $ .50/ brochure for a large quantity. | Variable depending on the text, graphics and presentation quality of the materials produced, numbers printed and distribution methods. |
Media Releases | Cost varies with labor up to a few hours of labor/ month. | Labor cost associated with TMP personnel interacting with media, as well as time developing press releases.Cost varies with labor up to a few hours of labor/ month. |
Public Info. Center | Basic cost would range from zero to $1.50 per square foot per month depending on the location. | Basic cost would range from zero to $1.50 per square foot per month depending on the location.Additional costs could include staffing, equipment, furnishings and operating costs. |
Paid Advertising | The cost depends on newspaper rates in the area, but can range between $100 to $600 for 3 column inches, one time only. | |
Visual Information | Variable | |
Telephone Hotline | Installation: In the range of $100 - $110 for one line
(local access only). Additional Lines: Approximately $75.00 each. Monthly Fee: $20.00 plus usage (rates are discounted if over |
Installation: This does not include having the actual line
installed into the location). Additional Lines: Approximately $75.00 each. |
Motorist Information
Strategy | Unit Cost | Comment |
---|---|---|
CMS | $35,000 to $50,000 to purchase depending upon whether installation is permanent or portable; $1,900 to $2,400/ month to lease in 1993 dollars.Annual operating costs can range from $13,000 to $22,000 (1989 dollars) per unit. | |
Signing and Striping | Variable | |
Highway Advisory Radio | $30,000 to $35,000/ spot; $53,000 for portable unit |
Incident Management
Strategy | Unit Cost | Comment |
---|---|---|
Traffic Monitoring Station | $30,000 per mile | |
Tow Service | Cost/ truck hour of service ranges from $50.00 to $60.00. Annualized cost of $85,000/ vehicle, or about $250/ day. | |
Aerial Surveillance | Ranges from $5,000 to 6,000 per month (based on D 12 project) to $12,000/ month (I-95 project in Florida) | |
Call Boxes | $5,000 to $6,500 for field units (part of construction cost, not TM cost); $25,000 to $32,000 dispatching unit; $500 to $600 annual operating cost/ unit. | Cost could also include telephone message charges and dispatching. |
COZEEP | $50 to $60/ hour | (Construction Zone Enforcement Enhancement Program) |
Construction Strategies
Strategy | Unit Cost | Comment |
---|---|---|
Variable Lanes | Temporary concrete barriers: $15 per linear foot Traffic cones: $10 each Channelizers: $35 each |
|
Project Phasing | Variable depending in the duration of construction, materials used for the stages construction, and additional design fees for preparation of PS & E. | |
Incentive / Disincentive Provisions | $6,000 per day with maximum 5 percent of construction cost for incentive $12,000 per day for disincentive (based on the I-45 project in Houston, Texas). | |
Cost-Plus-Time Bidding | Not Available | |
Owner- Imposed Physical Restrictions | Not Available | |
Use of Owner- Supplied or Stockpiled Materials | Not Available | |
Value Engineering Incentive | Not Available | |
Surveillance | Not Available | |
Lane/Ramp Closures | $2,800 per direction per count location | Counts may already be available in District's inventory section |
Glare/ Gawk Screens | $10 per linear foot to lease, $15 per linear foot to purchase | |
Truck Traffic Restrictions | None | |
Total Facility Closure | Cost for COZEEP depends on extent of closure | |
Lane-By-Lane Rental | Varies, depending on construction engineering costs, traffic control costs and road user costs. This element would typically be funded as part of the construction contract, rather than the TMP. |
Demand Management
Strategy | Unit Cost | Comment |
---|---|---|
Rideshare Incentives | Vanpooling incentives range from $.19 to $ .62 per vehicle using the corridor (based on ADT). | |
Rideshare Marketing | Unknown. | TMP costs do not differentiate between overall marketing costs and rideshare marketing costs. |
Park-and Ride Lots | Temporary at- grade parking would cost $1,000 per space with $50/ space with annual maintenance cost. | Variable, depending whether new lots must be acquired or built. |
Transit Service Improvements | $5.00/ vehicle mile. | |
Transit Incentives | Depends on level of incentive, up to $60/ month is not tax- free | |
High Occupancy Vehicle Lanes | $6,000 per mile for temporary HOV lane. | |
Parking Management/ Pricing | Minimal |
Alternate Routes
Strategy | Unit Cost | Comment |
---|---|---|
Ramp Closure and Ramp Metering | $80,000 to $100,000 per ramp for ramp metering. | |
Street Improvements | Approximately $10,000 per intersection. | Variable depending on the magnitude of geometric changes. |
Traffic Control Improvements | $10,000 to 25,000 per temporary signal or signal modification. |
Slide 34
Example of the Transportation Management Plans "Blanket Closure" Form F
This form asks for the following information:
- Contact Information: Contact Person; Phone (office); Phone (cell)
- Details: District; County; Route; Postmile(s); Number of Lanes Affected; Length of Segment; Location Description; Work Description; Initial Date/Time; Ending Date/Time; Expected Duration; Expected Delay (minutes)
- Blanket TMP Activities (user is asked to check the appropriate boxes): Bridge inspection/repair; Culvert/drainage—cleanout/inspection/repairs; Delineator/Postmile marker repairs/replacement; Ditch and channel work; Driveway construction; Debris/litter removal; Facility patrols and surveillance; Graffiti abatement/cleanup on walls/signs/equipment cabinets; Landscaping (irrigation/vegetation control—spraying, mowing); Lighting repairs/relamping; Non-landscaped area tree/brush/vegetation work; Electrical maintenance; Median barrier/attenuator repairs (off traveled way); Pavement coring/testing; Pavement—minor repairs/replacement; Pavement—grinding operations (AC digouts); Roadside Facilities (Rest Area/Vista Points); Roadside Facilities (Weigh Station/Park and Ride Lot); Restriping; Right-of-Way Fence repair; Safety and Accident investigations; Shoulder area grading for lateral support; Sign repairs/replacement; Sump pump repairs/cleaning; Surveying; Tree maintenance (trimming/pruning); Utilities placement/maintenance
- Facility (user is asked to check the appropriate boxes): Mainline; Auxiliary lane; Median; Shoulder; Bridge; On-ramp; Off-ramp; Connector
- Type of Closure (user is asked to check the appropriate boxes): Lane; Full Freeway; Moving; One-way; Various
- Additional Information: Did you prepare Lane Closure Charts? (user can answer yes or no); Was "Zero delay" goal accomplished? (If not, be sure to specify the expected delay above.) (user can answer yes or no); Are there adjacent Lane Closures in the same corridor? (user can answer yes or no); If Yes, what is the spacing?
Slide 35
Sample Delay Calculations for a Demand vs. Capacity Study
Location Details
Percent Truck | 0.0% |
---|---|
Percent Passenger Cars | 100.0% |
Number of Lanes Existing | 4 Lanes |
Number of Lanes Open | 2 Lanes |
Cost per Truck | $24/Vehicle-Hour |
Cost per Passenger Car | $9/Vehicle-Hour |
Cost for Mixed Flow Traffic | $9/Vehicle-Hour |
Single-Lane Capacity | 1500 Vehicles per hour |
Open-Lane Capacity | 3000 Vehicles per hour |
Count Date: 5-3-2001
Time | Demand (vehicles) | Cumulative Demand (vehicles) | Cumulative Capacity (vehicles) | Difference (vehicles) | Area (vehicle hours) | Queue Length (miles) | Individual Delay (minutes) |
---|---|---|---|---|---|---|---|
6 AM | |||||||
7 AM | 5309 | 5309 | 3000 | 2309 | 1154.5 | 2.7 | 46 |
8 AM | 6945 | 12254 | 6000 | 6254 | 4281.5 | 7.4 | 125 |
Results
Maximum Individual Delay | 125 minutes |
---|---|
Vehicle Delay Hours | 5,436 vehicle-hours |
Total Cost of Delay | $48,924 |
Delay Cost/10 minutes | $4,077 |