Tunnels

import requests

from datetime import datetime, timedelta, timezone

yesterday_noon = (datetime.now(timezone.utc) - timedelta(days=1)).replace(
    hour=12, minute=0, second=0, microsecond=0
)
params = {
    "timestamp": yesterday_noon.isoformat(),   # ISO accepted; epoch also works
}

url = "https://api.mobilitytwin.brussels/traffic/tunnels"

data = requests.get(url, headers={
        'Authorization': 'Bearer [MY_API_KEY]'
}, params=params).json()

# Show real-time traffic per tunnel device
for device_id, device_data in data['data'].items():
    results = device_data['results']
    # Get 15-minute aggregate
    r = results['15m']
    for lane, stats in r.items():
        if stats['speed'] is None:          # no measurement for this lane in the period
            continue
        print(f"{device_id} ({lane}): {stats['count']} vehicles, "
              f"speed={stats['speed']:.0f} km/h, occupancy={stats['occupancy']:.1f}%")