This is a Python script that can convert Bentley/Cube Voyager PT line input files to a shapefile.

convert_transit_lines.py

import pandas as pd
import numpy as np
import re
import geopandas as gpd
from shapely.geometry import Point, LineString

def read_card(input_file, group_id, key_id, nxy_table):
    with open(input_file, 'r') as fr:
        lines = fr.readlines()
    lines = [line.rstrip('\n') for line in lines]
    lines = [line for line in lines if line[0] != ';']
    lines = ''.join(lines)
    lines = lines.split(group_id)
    lines = [dict(re.findall(r'(\S+)\s*\=\s*(.*?)\s*(?=\S+\s*\=|$)', line)) for line in lines]
    out_lines = []
    for line in lines:
        if 'NAME' in line.keys():
            x = {}
            x['route_id'] = line['NAME']
            for k, v in line.items():
                if not k in ['NAME', 'N']:
                    x[k] = v.replace('"',"").replace(',','')
            coords = nxy_table.loc[[abs(int(n)) for n in line['N'].replace('\n','').replace(' ', '').split(',')]]
            geom = LineString([tuple(x) for x in coords.to_numpy()])
            x['geometry'] = geom
            out_lines.append(x)             
    return gpd.GeoDataFrame(out_lines)

transit_lines = read_card(r'path\to\transit.lin', 'LINE', 'NAME', nodes[['N', 'X', 'Y']].set_index('N'))
transit_lines.to_file('trn_routes.shp')