Ask HN: How to identify the number of people on a bus?

1 pointsby betimdvor 2 Jahren8 comments

What kind of technology (LiDAR or ViDAR) would help us identify the number of people on a bus?

People inside might have RFID / NFC technology with them, like badges, but we can't count on them 100% as someone might forget or not have that piece at all.

Of course, buses will slow down when they come to a "checkpoint" to allow devices (cameras) to perform better scanning.

By the way, it's a civil project, nothing to do with law enforcement. A huge convention center wants to know in advance, if 100 buses are coming, what number of participants to expect at their gate.

4 comments

[deleted]vor 2 Jahren

tocs3vor 2 Jahren

While in college and the University of Texas in Austin I had job counting people getting on and off the city busses and UT shuttles.

stop50vor 2 Jahren

Wouldn't it be a bit late when they are already in the buses?

betimdvor 2 Jahren

Nope. That's the case.

beardywvor 2 Jahren

Ask the driver, they will know.

betimdvor 2 Jahren

Hah :D, drivers always know but some of 'em are lazy!

JohnFenvor 2 Jahren

Even so, I'm willing to bet that having the drivers count passengers and report that count would be more accurate and less expensive than a technological solution.

betimdvor 2 Jahren

The case is for a tech solution.

TowerTallvor 2 Jahren

Put up a cell tower. Count the number of cell phones. Most people cary a phone