CE 578 Highway Traffic Operations Passing Lanes and Climbing Lanes HCM 2000.

Slides:

Advertisements

Similar presentations

Roundabout Level of Service and Delay and Comparison to Other Intersection Types Roundabout Level of Service and Delay and Comparison to Other Intersection.

Advertisements

VARIABLE SPEED LIMIT DEPLOYMENT EVALUATION I-270/I-255 Traffic and Safety Conference May 12, 2010 Missouri University of Science and Technology and HDR.

Site Grading Site Grading Civil Engineering and Architecture

Travel Time Estimation on Arterial Streets By Heng Wang, Transportation Analyst Houston-Galveston Area Council Dr. Antoine G Hobeika, Professor Virginia.

Chapter 15: Weaving, Merging, and Diverging Movements on Freeways and Multilane Highways Chapter objectives: By the end of this chapter the student will.

Corridor planning: a quick response strategy. Background NCHRP Quick Response Urban Travel Estimation Techniques (1978) Objective: provide tools.

VERTICAL ALIGNMENT Spring 2015.

Transportation Engineering

INTRODUCTION TO TRANSPORT Lecture 3 Introduction to Transport Lecture 4: Traffic Signal.

Critical Length of Grade

Capacity Analysis CE 453 Lecture #14.

2/8/2006Michael Dixon1 CE 578 Highway Traffic Operations AASHTO Grades.

Case Study 4 New York State Alternate Route 7. Key Issues to Explore: Capacity of the mainline sections of NYS-7 Adequacy of the weaving sections Performance.

SIGHT DISTANCE Spring 2015.

CE 578 Highway Traffic Operations Lecture 4: HCM Directional Analysis.

CE 578 Highway Traffic Operations Lecture 7: Two-lane highway performance.

2 Lane 2 way Rural hwys CTC-340. HMWK CH 16 # 1, 3, 6 use HCS+ software.

CE 578 Highway Traffic Operations Lecture 4: HCM Directional Analysis.

Session 11: Model Calibration, Validation, and Reasonableness Checks

Progressive Signal Systems. Coordinated Systems Two or more intersections Signals have a fixed time relationship to one another Progression can be achieved.

Norman W. Garrick Time-Distance Diagrams of Traffic Flow Vehicle 2 u 2 = 30 mph (constant) Vehicle 1 u 1 = 50 mph (constant) Distance Time Fix Point in.

CTC-340 Signals - Basics. Terms & Definitions (review) Cycle - Cycle Length - Interval -. change interval - clearance interval- change + clearance = Yi.

3/22/06Michael Dixon1 CE 578 Highway Traffic Operations Lecture 24: Freeway Weaving Section II.

3/3/06Michael Dixon1 CE 578 Highway Traffic Operations Freeways Merge Influence Areas.

2/24/06Michael Dixon1 CE 578 Highway Traffic Operations Lecture 12: Auxiliary Lane Sensitivity Analysis and Climbing Lane Warrant.

CE 4640: Transportation Design

2/27/06Michael Dixon1 CE 578 Highway Traffic Operations Lecture 16: Freeways Basic Sections.

Unsignalized Intersections CTC-340. Hmwk At end of powerpoint.

Chapter 241 Chapter 25: Analysis of Arterial Performance Know how arterial LOS is defined Be able to determine arterial classes Know how to determine arterial.

Chapter 3. Highway Design for Performance

3/1/06Michael Dixon1 CE 578 Highway Traffic Operations Lecture 17: Freeways Basic Sections Application.

Course Introduction and Two- Lane Highway Horizontal Alignment Lecture 1: CE 578 Highway Traffic Operations.

Norman W. Garrick Example of a Shock Wave At a Stop Traffic is flowing normal Flow, q = 500 veh/hr Conc, k = 10 veh/mi T = t 1 sec.

9/23/2009Michael Dixon1 CE 578 Highway Traffic Operations Crawl Regions and Specific Grades HCM 2000.

3/6/06Michael Dixon1 CE 578 Highway Traffic Operations Freeways Ramps and Ramp Junctions Examples and Special Applications for Merge Areas.

Design Speed and Design Traffic Concepts

3/6/06Michael Dixon1 CE 578 Highway Traffic Operations Lecture 21: Freeway Ramps and Ramp Junctions Diverge Areas.

CE 578 Highway Traffic Operations Freeway Merge and Diverge Segments.

Level of Service Section 4.5. Level of Service: The Basics MMeasure performance by density. RRatio of operating capacity to speed. UUnits: passenger.

CE 578 Highway Traffic Operations Introduction to Freeway Facilities Analysis.

2/7/2006Michael Dixon1 CE 578 Highway Traffic Operations Lecture 3: Passing maneuvers, sight distance, and zones.

02 – 4a Unit Rates PA Grade 7, Math Anchor M07.A-R Compute unit rates associated with ratios of fractions, including ratios of lengths, areas, and.

Ramps & Weaving.

Lec 17, Ch.9, pp : Capacity of freeway sections (objectives) Understand capacity and level of service are the heart of transportation analyses Understand.

Freeway Capacity Analysis

Hcm 2010: work zones.

Highway Costs Spring Highway Transportation Costs Type of CostExamples Highway investment costEngineering design, ROW, grading, drainage, pavement.

MD : ATIKUL ISLAM JUNIOR INSTRACTOR DEPT. OF. CIVIL SUB: SURVEYING3 SUB CODE : 6452 MOB:

Introduction to Transport

6.8 Analyzing Graphs of Polynomial Functions

Chapter 13: Weaving, Merging, and Diverging Movements on Freeways and Multilane Highways Chapter objectives: By the end of these chapters the student will.

Traffic Flow Fundamentals

Calculating sample size for means Afshin Ostovar Bushehr University of Medical Sciences.

Transportation Research Board Planning Applications Conference, May 2007 Given by: Ronald T. Milam, AICP Contributing Analysts: David Stanek, PE Chris.

Traffic Barrier Guidelines Other Considerations Workshop V September-October 2015.

Chapter 9 Capacity and Level of Service for Highway Segments

4.7 PROPORTIONAL RELATIONSHIPS I CAN IDENTIFY PROPORTIONAL RELATIONSHIPS AND FIND CONSTANTS OF PROPORTIONALITY BY USING PROPORTIONS.

1 The Highway Safety Manual Predictive Methods. 2 New Highway Safety Manual of 2010 ►Methodology is like that for assessing and assuring the adequacy.

Case Study 4 New York State Alternate Route 7 Problem 2.

Case Study 1 Problem 5 Styner/Lauder Intersection Moscow, Idaho.

Freeway Capacity and Level of Service

6.8 Analyzing Graphs of Polynomial Functions

Objective- To use variables in formulas to describe situations.

Chapter 3. Highway Design for Performance

Finding the Slope of a Line Unit 7.02

Transportation Engineering LOS on other roadway types March 4, 2011

Objective- To use variables in formulas to describe situations.

Problem 5: Interstate 87 Interchange

Solve Linear Systems by Adding or Subtracting

5.1 – Rate of Change Textbook pg. 294 Objective:

Presentation transcript:

CE 578 Highway Traffic Operations Passing Lanes and Climbing Lanes HCM 2000

Objectives Concept of passing lane analysis Comparison of passing and climbing lanes analysis Understand application

PTSF Trends with and without a Passing Lane

HCM 2000 Concept of Auxiliary Lane Effects on PTSF PTSF d Directional PTSF estimate without the auxiliary lane LuLu Length of highway upstream of auxiliary lane (miles) L pl Length of passing lane (miles) L de Downstream length of highway with PTSF affected by auxiliary lane LdLd Length of highway downstream of auxiliary lane beyond the effect of the auxiliary lane

HCM 2000 Concept of Auxiliary Lane Effects on ATS ATS d Directional ATS estimate without the auxiliary lane LuLu Length of highway upstream of auxiliary lane (miles) L pl Length of passing lane (miles) L de Downstream length of highway with ATS affected by auxiliary lane LdLd Length of highway downstream of auxiliary lane beyond the effect of the auxiliary lane

Equation for PTSF d Adjustment

Equation for ATS d Adjustment

Method of Adjustment PTSFpl=A2/LT A2 = PTSFd * Lt – A1 A1 = (PTSFd – PTSF * fpl) * (Lpl) + (PTSFd – PTSF * fpl)*(Lde) * ½

Basic Assumptions Directional PTSF and ATS are constant No relation between passing lane length and downstream affected length No affect of adjacent auxiliary lanes Independent of passing location relative to grade

Overall HCM 2000 Process of Analyzing Auxiliary Lanes An auxiliary lane is a second lane added for the benefit of traffic operations… Perform directional analysis Determine location and length of the auxiliary lane Secure factors Calculate adjustments Adjust ATS and PTSF values

Tables for L de and f pl : Passing and Climbing Lane

Basic Trends As volume rises effectiveness of auxiliary lane ___________ Effectiveness of a climbing lane is _____________than that of a passing lane PTSF is _______sensitive to auxiliary lane effects

Application to Passing Lanes Given: PTSF d = 80ATS d = 45 mph L t = 10 milesL u = 2 milesL pl = 1 mile v p_PTSF = v p_ATS = 700 pc/hr use Equations and for situations where L t < L u + L pl + L de