Italian TEN-T road network and Hydrogen Refueling Station nodes

This folder contains three ESRI-shapefiles (representing respectively the network edges, the network nodes and the resulting positions found with an optimization framework to site hydrogen refueling stations (HRS) in Italy) and a CSV-file used to characterize the vehicle traffic flow on each origin-destination path on the represented network. 

network_nodes.shp

There are different type of nodes:

NUTS-3 nodes, being the possible origin or destination nodes. They represent the weighted centroid of the NUTS-3 region they refer to. 

Fuel areas centroids: obtained as the centroids of the dissolved buffer areas of the conventional fuel stations on the road network.

Intersection nodes: manually added on the network nodes intersections.

Main road entrances.

Port nodes.

network_edges.shp

The edges represent the Trans-European Network (TEN-T) core and comprehensive layers. Some edges are manually added:

Edges connecting NUTS-3 nodes to the main road network;

Ferry edges, which have "road length" equal to 0, as they do not imply fuel consumption for road trucks.

italian_paths_OD_NUTS3_vR1.csv

Containing O-D paths thorugh the TEN-T road network from each origin to each destination. Each path is represented as an ordered succession of nodes and of their positions with respect to the origin node. For each path an estimation of the tons and trucks expected on it by 2030 is given. 

HRS_nodes.shp

HRS nodes position and specifications obtained with an optimization framework to serve the national freight transport system if vehicles paths with dist_ROAD > 100 km, Traffic_flow_trucks_2030 >= 2600, initial vehicle range = 300 and maximum vehicle range = 600 km are considered. The fuel cell hydrogen electric vehicles share over the total number of circulating vehicles is assumed equal to 10%.

本文件夹包含三个ESRI形状文件（ESRI-shapefiles），分别对应路网边、路网节点以及采用优化框架确定的意大利加氢站（hydrogen refueling stations, HRS）选址结果点位；同时附带一个CSV文件，用于表征目标路网各起讫点路径上的机动车交通流量特征。

network_nodes.shp
本文件包含多种类型的节点：
1. NUTS-3级节点（NUTS-3 region）：作为潜在的起讫点节点，代表其所归属的NUTS-3区域的加权质心。
2. 燃油加注区域质心：通过对路网中常规燃油加油站的缓冲区进行融合溶解后提取的质心生成。
3. 交叉口节点：手动添加至路网节点交叉口处。
4. 主干道出入口节点。
5. 港口节点。

network_edges.shp
本文件中的边代表泛欧交通网络（Trans-European Network, TEN-T）的核心层与综合层路网。其中部分边为手动添加，具体包括：
1. 连接NUTS-3级节点与主干道路网的边；
2. 轮渡边：此类边的"道路长度"字段取值为0，因为公路货运车辆在轮渡通行过程中无需消耗道路燃油。

italian_paths_OD_NUTS3_vR1.csv
该文件包含基于TEN-T公路路网的全量起讫点路径数据，每条路径以有序序列的形式呈现其包含的节点以及各节点相对于起程节点的位置信息。此外，文件中还给出了每条路径在2030年的预计货运吨数与卡车通行流量。

HRS_nodes.shp
本文件包含通过优化框架得到的加氢站点位与参数信息，该优化框架用于服务全国货运交通系统，其规划前提为考虑以下条件的货运车辆路径：公路行驶里程（dist_ROAD）>100km、2030年卡车流量（Traffic_flow_trucks_2030）≥2600、车辆初始续航里程为300km且最大续航里程为600km。研究假设燃料电池氢动力电动汽车在全部运营车辆中的占比为10%。