Freeway Management and Operations Handbook

Description of Figure 2-1: Freeway Management "Tiers" and Activities

This is the Transportation Tier Diagram. There are four tiers that represent the various planning horizons. To the left of the four tiers is a vertical rectangular box that runs perpendicular to it. This rectangular box on the left-hand side is entitled, "LEGISLATIVE, REGULATORY & RESEARCH: NATIONAL, STATE & LOCAL ENABLING MECHANISMS." There are four double-headed arrows that extend horizontally from this box on the left-hand side to each of the four tiers on the right-hand side. Within this box is another rectangular box of a lighter shading that contains five bullets. The five bullets are: "AUTHORIZING LEGISLATION", "FEDERAL REGULATIONS", "FEDERAL POLICY", "RESEARCH PROGRAM, and “STAKEHOLDER and COMMUNITY INOLVEMENT."

The top tier of the diagram is entitled, "TIER 1: STRATEGIC LONG RANGE PLANNING & INVESTMENT DECISION MAKING (AT LEAST 20 YEARS)." Within this rectangular box is another rectangular box of lighter shading. On the left-hand side are three bullets. These bullets are "FREEWAY NETWORK PLANS", "CORRIDOR TRANSPORTATION PLANS", AND "HOV SYSTEM STRATEGY PLAN AND PROGRAM." On the right-hand side is a flow chart of four boxes that are arranged in a N/S/W/E pattern. Each of the boxes is connected to the other with a double-headed arrow, with the exception of the north and south boxes. The north box is "AGENCY & COMMUNITY STRATEGIC PLANS". The east box is "CORRIDOR HIGHWAY/FREEWAY IMPROVEMENT PLANS". The south box is "SYSTEM STRATEGIC PLANS (e.g. FREEWAY NETWORK, TRANSIT)". The west box is "REGIONAL TRANSPORTATION PLANS".

The second tier of the diagram is entitled, "TIER 2: PROGRAM AND SYSTEM PLANNING & INVESTMENT DECISION MAKING (3-20 YEARS)." Within this rectangular box is another rectangular box of lighter shading. On the left-hand side, there are two bullets which say, "REGIONAL PROGRAMS OR ORGANIZATIONS AND PLANS" AND "AGENCY PROGRAMS AND PLANS - STIP". On the right-hand side of the box is a flow chart of four boxes arranged in a N/S/W/E pattern. Each of the boxes is connected to the other with double-headed arrows, except the north and south boxes. The north box is "REGIONAL CONGESTION MANAGEMENT SYSTEM PLANS". The east box is "TRAFFIC MANAGEMENT SYSTEM STRATEGIC/PROGRAM PLANS". The south box is "REGIONAL AGENCY PROGRAM AND PLANS (e.g. TRAFFIC OPS., FREEWAY/MGMT.)". The west box is "REGIONAL/AGENCY IMPROVEMENT PRGMS. (e.g. STIP, TIP)".

The third tier of this diagram is entitled, "TIER 3: PLANNING, DEVELOPING & PREPARING FOR DAY-TO-DAY OPERATIONS (1-3 YEARS)." Within this rectangular box is another rectangular box of lighter shading. It contains a flowchart of four boxes arranged in the N/S/E/W pattern. Each of the boxes is connected to the other with a double-headed arrow, except for the west and east boxes. The north box is "TRANSPORTATION MANAGEMENT PLANS, OPERATIONAL STRATEGIES, AND TRAFFIC CONTROL PLANS." The east box is "TRAFFIC MANAGED SYSTEMS DESIGN & ENHANCEMENTS." The south box is "SUPPORT PROGRAMS & SERVICES (e.g. TRAVELER INFO., INCIDENT MGMT.)." The west box is "DEVELOPING ROADWAY IMPROVEMENT PROJECTS."

The fourth tier is entitled, "TIER 4: DAY-TO-DAY OPERATIONS (REAL-TIME TO 1 YEAR)." Within this rectangular box is another rectangular box of a lighter shading. It contains 7 bullets. They are: "TRAFFIC CONTROL DEVICE OPERATION AND MAINTENANCE", "PERFORMANCE MONITORING AND REPORTING", INCIDENTS (e.g. ADVERSE WEATHERS, CRASHES)", "WORK ZONE TRAFFIC MANAGEMENT", "MODIFYING TRAFFIC SIGNAL TIMING PLANS", "EMERGENCY SERVICE PATROL SERVICE", AND "ROADWAY MAINTENANCE."

	Skip to content

Freeway Management and Operations Handbook
Back to Chapter 2 Page 1 Description of Figure 2-1: Freeway Management "Tiers" and Activities This is the Transportation Tier Diagram. There are four tiers that represent the various planning horizons. To the left of the four tiers is a vertical rectangular box that runs perpendicular to it. This rectangular box on the left-hand side is entitled, "LEGISLATIVE, REGULATORY & RESEARCH: NATIONAL, STATE & LOCAL ENABLING MECHANISMS." There are four double-headed arrows that extend horizontally from this box on the left-hand side to each of the four tiers on the right-hand side. Within this box is another rectangular box of a lighter shading that contains five bullets. The five bullets are: "AUTHORIZING LEGISLATION", "FEDERAL REGULATIONS", "FEDERAL POLICY", "RESEARCH PROGRAM, and “STAKEHOLDER and COMMUNITY INOLVEMENT." The top tier of the diagram is entitled, "TIER 1: STRATEGIC LONG RANGE PLANNING & INVESTMENT DECISION MAKING (AT LEAST 20 YEARS)." Within this rectangular box is another rectangular box of lighter shading. On the left-hand side are three bullets. These bullets are "FREEWAY NETWORK PLANS", "CORRIDOR TRANSPORTATION PLANS", AND "HOV SYSTEM STRATEGY PLAN AND PROGRAM." On the right-hand side is a flow chart of four boxes that are arranged in a N/S/W/E pattern. Each of the boxes is connected to the other with a double-headed arrow, with the exception of the north and south boxes. The north box is "AGENCY & COMMUNITY STRATEGIC PLANS". The east box is "CORRIDOR HIGHWAY/FREEWAY IMPROVEMENT PLANS". The south box is "SYSTEM STRATEGIC PLANS (e.g. FREEWAY NETWORK, TRANSIT)". The west box is "REGIONAL TRANSPORTATION PLANS". The second tier of the diagram is entitled, "TIER 2: PROGRAM AND SYSTEM PLANNING & INVESTMENT DECISION MAKING (3-20 YEARS)." Within this rectangular box is another rectangular box of lighter shading. On the left-hand side, there are two bullets which say, "REGIONAL PROGRAMS OR ORGANIZATIONS AND PLANS" AND "AGENCY PROGRAMS AND PLANS - STIP". On the right-hand side of the box is a flow chart of four boxes arranged in a N/S/W/E pattern. Each of the boxes is connected to the other with double-headed arrows, except the north and south boxes. The north box is "REGIONAL CONGESTION MANAGEMENT SYSTEM PLANS". The east box is "TRAFFIC MANAGEMENT SYSTEM STRATEGIC/PROGRAM PLANS". The south box is "REGIONAL AGENCY PROGRAM AND PLANS (e.g. TRAFFIC OPS., FREEWAY/MGMT.)". The west box is "REGIONAL/AGENCY IMPROVEMENT PRGMS. (e.g. STIP, TIP)". The third tier of this diagram is entitled, "TIER 3: PLANNING, DEVELOPING & PREPARING FOR DAY-TO-DAY OPERATIONS (1-3 YEARS)." Within this rectangular box is another rectangular box of lighter shading. It contains a flowchart of four boxes arranged in the N/S/E/W pattern. Each of the boxes is connected to the other with a double-headed arrow, except for the west and east boxes. The north box is "TRANSPORTATION MANAGEMENT PLANS, OPERATIONAL STRATEGIES, AND TRAFFIC CONTROL PLANS." The east box is "TRAFFIC MANAGED SYSTEMS DESIGN & ENHANCEMENTS." The south box is "SUPPORT PROGRAMS & SERVICES (e.g. TRAVELER INFO., INCIDENT MGMT.)." The west box is "DEVELOPING ROADWAY IMPROVEMENT PROJECTS." The fourth tier is entitled, "TIER 4: DAY-TO-DAY OPERATIONS (REAL-TIME TO 1 YEAR)." Within this rectangular box is another rectangular box of a lighter shading. It contains 7 bullets. They are: "TRAFFIC CONTROL DEVICE OPERATION AND MAINTENANCE", "PERFORMANCE MONITORING AND REPORTING", INCIDENTS (e.g. ADVERSE WEATHERS, CRASHES)", "WORK ZONE TRAFFIC MANAGEMENT", "MODIFYING TRAFFIC SIGNAL TIMING PLANS", "EMERGENCY SERVICE PATROL SERVICE", AND "ROADWAY MAINTENANCE."
	US DOT Home \| FHWA Home \| Operations Home \| TMC Pooled-Fund Study \| Privacy Policy