Using Countdown Clock Data to Understand the New York City Subway
&gt;The L train is also the only line that uses modern &gt;communications-based train control (CBTC), which allows &gt;trains to operate in a more automated fashion.<p>It&#x27;s not &quot;more automated fashion&quot;, it&#x27;s fully automated, LIDAR and all - they are fully autonomous. L trains have operators because of unions throwing a fit and most of the times they sit there twiddling their thumbs.