This chapter describes the first step in the analysis framework, which is classification of the project type. The project classification is a critical first step because it determines the applicable evaluation criteria and impact measures – including the types of direct transportation impacts (for Step 3), the types of reliant industries and other affected sectors of the economy (for Step 4), and the geography of the analysis (local or nationwide impacts) to be evaluated (for Step 5).
The first dimension of the project classification is concerned with the type of transportation facility and its spatial characteristic. There are three major types of facility locations of interest to this framework. They are defined below and illustrated in Figure 3.1:
Figure 3.1 Types of Project Facilities
This classification will help identify the types of users and the general geographic or spatial scope of the analysis. It is important to determine if the transportation impacts of the project are able to be captured by modeling or analyzing the project influence within a regional context or whether a broader national or international network system context is needed in order to fully capture the impact of the project. A network system analysis is typically required when evaluating rail and port investments and may be warranted for specific contexts of highway corridor improvements.
While it is difficult to provide generalized guidance on how large an area should be included in the transportation impact analysis, the key considerations include: 1) what are the end-to-end origins and destinations of trips that dominate the use of the facility? and 2) do the travel performance changes within the local geography persist and ultimately translate into meaningful travel savings for shippers? If the project proponents give explicit consideration to these questions, they will be less likely to miss benefits.
The next part is to classify proposed projects by their primary transportation objectives (i.e., the way in which they are expected to improve transportation system performance). So while projects may have transportation, economic, environmental, or political motivations, their primary transportation objectives generally fall within at least one of the following four improvement categories:
The four major categories of transportation improvement are shown in Table 3.1, along with examples of the range of project actions (investments) that fall within each of these four categories. Note that neither the improvement categories nor the list of project actions makes any distinction between new facilities or existing facilities. Rather, the table instead focuses on the affected mode and the type of action taken to change capacity or performance. The third column indicates the primary modes that may be associated with a particular type of investment. Understanding which modes will be affected is important for determining the analytical models and methodologies needed later for Step 3.
Table 3.1 Examples of Projects by Category of Transportation Improvement
Improvement Category |
Project Action |
Mode |
|---|---|---|
Capacity expansion – link |
Add general public lanes |
Highway |
Capacity expansion – link |
Add truck-only lanes |
Highway |
Capacity expansion – link |
Add track |
Rail |
Capacity expansion – link |
Upgrade track (speed or weight) |
Rail |
Capacity expansion – link |
Upgrade/eliminate grade crossing |
Rail/Highway |
Capacity expansion – link |
Upgrade locks/dams |
Water |
Capacity expansion – link |
Navigable waterway improvement |
Water |
Capacity expansion – link |
Tunnel upgrades |
Rail |
Capacity expansion – link |
Correct design deficiencies |
All |
Capacity expansion – terminal |
Channel deepening – harbor |
Water |
Capacity expansion – terminal |
Air draft improvement |
Water |
Capacity expansion – terminal |
Added lift capacity |
Rail/Water |
Capacity expansion – terminal |
Added terminal storage capacity |
Rail/Water |
Capacity expansion – terminal |
Added gate capacity |
Rail/Water |
Operational improvements |
Roadway geometrics |
Highway |
Operational improvements |
Track alignments |
Rail |
Operational improvements |
Signalization improvements |
Highway |
Operational improvements |
Electronic control |
Rail |
Operational improvements |
Intelligent transportation systems |
All |
Operational improvements |
Information systems – scheduling/cargo visibility |
All |
Operational improvements |
LCV upgrades |
Highway |
Operational improvements |
Hours of operation |
All |
Connectivity |
Intermodal connector improvements |
All |
Connectivity |
On-dock/near-dock rail |
Rail/Water |
Connectivity |
Gap closure |
Rail/Highway |
Connectivity |
Short haul rail |
Rail |
Freight Vehicle Movement. For each type of project action, there are corresponding benefits for goods movement that can be measured. The five major types direct transportation benefits are:
Table 3.2 shows, for each type of project, the corresponding types of transportation benefits and key metrics for portraying those benefits. This is meant to be a generally comprehensive list so that analysts can identify the choice of analytical methods for a specific project type. However, it is important to note that these are just the “first order” direct benefits for freight transportation movement that occur as a direct result of the various types of projects, and do not reflect the broader industry and economy effects described in Step 4 of the analytical framework. They accrue to freight vehicle movement (where a “vehicle” may be a truck, train, boat or aircraft), thus they are experienced first by the vehicle owners and operators.
Table 3.2 Transportation Benefits and Metrics by Project Type
Project Type |
Mode |
Transportation Benefits |
Metrics |
|---|---|---|---|
Add general purpose lanes |
Highway |
Congestion – travel time savings |
Travel time |
Add general purpose lanes |
Highway |
Reliability – reduced incident impact |
Nonrecurrent delay |
Add general purpose lanes |
Highway |
Potential accident reduction |
Accidents |
Add truck-only lanes |
Highway |
Congestion – travel time savings |
Travel time |
Add truck-only lanes |
Highway |
Reliability – reduced incident impact |
Nonrecurrent delay |
Add truck-only lanes |
Highway |
Potential accident reduction |
Accidents |
Add track/new link |
Rail/Highway |
Congestion – time savings/car cycling |
Travel time, cycle time |
Add track/new link |
Rail/Highway |
Potential reliability – queue impact |
On time performance |
Add track/new link |
Rail/Highway |
Diversion to rail reduces congestion |
Volume, travel time |
Upgrade track (speed or weight) |
Rail |
Improved travel time, railcar cycle time |
New weight/speed |
Upgrade track (speed or weight) |
Rail |
Potential reliability |
On time performance |
Upgrade track (speed or weight) |
Rail |
Potential safety |
Accidents |
Upgrade/eliminate grade crossing |
Rail/Highway |
Potential speed/travel time savings |
Average speed |
Upgrade/eliminate grade crossing |
Rail/Highway |
Accident reduction – reliability Savings |
Accidents |
Upgrade locks |
Water |
Improve travel time |
Travel time |
Waterway improvement |
Water |
Increased vessel drafts reduces costs |
Cost per unit (ton or TEU) |
Waterway improvement |
Water |
Potential safety/incident and reliability |
Accidents |
Tunnel upgrades |
Rail |
Double-stack potential – car cycle time |
Direct cost |
Correct design deficiencies |
All |
Local congestion/travel time |
Average speed |
Correct design deficiencies |
All |
Reliability – reduced incident impact |
Incident delay |
Correct design deficiencies |
All |
Accident reduction – reliability savings |
Accidents |
Channel deepening |
Water |
Increased vessel drafts reduces costs |
Cost per unit (ton or TEU) |
Air Draft improved |
Water |
Increased vessel drafts reduces costs |
Cost per unit (ton or TEU) |
Added lift capacity |
All |
Increased throughput – delivery speed |
Throughput per acre |
Terminal capacity |
All |
Increased throughput – delivery speed |
Throughput per acre |
Gate capacity |
All |
Increased throughput – delivery speed |
Throughput per acre |
Roadway geometrics |
Highway |
Local congestion |
Average speed |
Roadway geometrics |
Highway |
Reliability – reduced incident impact |
Incident delay |
Roadway geometrics |
Highway |
Accident reduction – reliability savings |
Accidents |
Track alignments |
Rail |
Local congestion |
Average speed |
Track alignments |
Rail |
Reliability – reduced incident impact |
On time performance |
Track alignments |
Rail |
Accident reduction – reliability Savings |
Accidents |
Signalization, electronic control |
Highway |
Local congestion – travel time |
Travel time, network model |
Signalization, electronic control |
Rail |
Local delay – travel time |
Travel time delay |
ITS |
All |
Congestion benefits – time savings |
Travel time, network model |
ITS |
All |
Reliability, incident management |
Incident delay |
LCV upgrades |
Highway |
Productivity – cost savings |
Unit costs |
Hours of operation |
All |
Congestion benefits – time savings |
Travel time |
Intermodal connectors |
All |
Congestion benefits – time savings |
Travel time |
Intermodal connectors |
All |
reliability – not related to incidents |
Travel time |
Rail on/near dock |
Rail/Water |
No direct benefit, secondary only |
Cost per unit |
Gap closure |
Rail/Highway |
Congestion benefits – time savings |
Travel time |
Gap closure |
Rail/Highway |
Reliability – not related to incidents |
Travel time |
Short-haul rail |
Rail |
Potential speed or capacity improvements |
Travel time |
Short-haul rail |
Rail |
Potential reliability |
Throughput |
Direct Shipper Benefits. While the first order impacts are experienced by freight vehicle operators and owners, it is freight shippers who ultimately realize the transportation efficiency benefits (for all types of projects) as business productivity enhancements. That results from:
Cross-Modal Transportation Benefits. There are also transportation system benefits and beneficiaries that are not listed in Table 3.2. These generally involve cross-modal benefits, such as congestion reduction benefits (travel time, reliability, and safety improvement) for passenger vehicles that benefit when some freight movement is shifted from truck to short-haul or medium-haul rail service.
Result. The end product of Step 1 should be a classification of proposed projects by their a) mode and functional activities, b) form of improvement, c) mix of project actions, and d) associated metrics for assessing transportation benefits.