Have you ever played with shapes and patterns? That's what geometry is all about! It's the study of lines, angles, shapes, and space. From drawing cool designs to building structures, geometry is an important part of our world.

The objective of my project was to find out how travel times varied between segments on SamTrans Bus route 260 from my home in Redwood Shores to Ralston Middle School in Belmont.

We're going to measure the travel time between different segments of SamTrans Route 260 from Redwood Shores to Belmont. We'll use a stopwatch to measure the time it takes to get from one segment to the next, and then calculate the average travel time and variation for each segment.

Project Title: How Does Travel Time Vary between Segments on SamTrans Route
260?

Objectives/Goals

The objective of my project was to find out how travel times varied between
segments on SamTrans Bus
route 260 from my home in Redwood Shores to Ralston Middle School in Belmont.

Methods/Materials

First I divided the route I wanted to study into several segments. I identified
the end points of the various
segments by traveling the bus route in a car and noting the distances from the
start point.
For 23 school days, I used a stopwatch to record the time the bus took to cross
the endpoint of each
segment. I stopped the watch whenever the bus stopped and children boarded to
eliminate boarding
delays.
I computed the average travel time and the variation for each segment. Since the
segments were not of
equal distance, I estimated the time per kilometer for each segment before
comparing them.

Results

The segment near Belmont Train Station had the longest travel time of 298 sec./
Km. The segment near
Oracle had the lowest travel time of 99 sec./Km. Travel times varied 418% in the
segment after Notre
Dame High School, while the segment near Oracle showed a 183% variation. The
average running time
for the section of Route 260 studied was 31:11 min., excluding boarding time.
This is more than the
SamTrans scheduled time of 27 min., which includes boarding times. The running
time was highest on
Fridays, with 33:20 min., while it was least on Wednesdays, with 28:59 min.

Conclusions/Discussion

My hypothesis was partly correct - of the two segments that I thought would
cause undue delays, only one
proved to be correct. The travel time in the segment near the Belmont Train
Station was long while the
time for the segment near Oracle was not. The reason for the result being
different from my original
hypothesis is the direction of traffic. There is more eastbound traffic on
Marine Parkway near Oracle in
the mornings while the bus travels in the opposite direction.
The travel time was the lowest per kilometer in the segment where there were
most lanes. The variation
was highest in the segment with a single lane. The impact of traffic and
signals, however, could not be
determined conclusively because there was not sufficient information.
Although Fridays appeared to have the longest running time, the sample size was
too small to state this
with confidence.

Summary Statement

I investigated the relationships between segments and travel times along
SamTrans Bus Route 260.

Help Received
My dad drove me along the bus route so I could divide the route into segments.
My mom reviewed my
report and the poster.

Investigating Travel Time on SamTrans Route 260

How Does Travel Time Vary between Segments on SamTrans Route 260?

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Math is all about numbers, patterns, and solving problems. Computer science is about using math and technology to create computer programs and solve real-world problems. Together, they help us understand how things work, how to solve problems, and how to use technology to make our lives better!

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Investigating Travel Time on SamTrans Route 260

Hypothesis

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