Petru S. πŸš„πŸš¦πŸš²'s Avatar

Petru S. πŸš„πŸš¦πŸš²

@sofio

He/Him | NU 2028 (civil engineering) | *Posts/Likes/Etc. reflect my own views*

1,605
Followers
333
Following
407
Posts
19.09.2023
Joined
Posts Following

Latest posts by Petru S. πŸš„πŸš¦πŸš² @sofio

Cyclists, including a child, ride in a designated bike lane with a green surface on a city street. Several police motorcycles escort the group. Residential and commercial buildings line the street, and signs indicate traffic directions.

Cyclists, including a child, ride in a designated bike lane with a green surface on a city street. Several police motorcycles escort the group. Residential and commercial buildings line the street, and signs indicate traffic directions.

Join the 2026 Annual Winter Bike Ride! πŸš΄β„οΈ

πŸ—“οΈ Saturday, March 7 | Meet between 9:30–10 a.m. (ride leaves promptly at 10)
πŸ“ Meet near the intersection of Broadway & Norfolk, by the Bluebikes station

For more details and other bike rides ➑️ https://camb.ma/4shDoLT

06.03.2026 19:32 πŸ‘ 4 πŸ” 2 πŸ’¬ 0 πŸ“Œ 0
Preview
Congress Allocates $80 Million to Build Blue Hill Ave. Busway - Streetsblog Massachusetts Combined with existing pledges of funding from other federal, state, and local sources, the project is now fully funded for construction.

SCOOP: The Blue Hill Avenue center-running busway project, endorsed by @mbta.com and @mayorwu.boston.gov, is now fully funded for construction.

Congress Allocates $80 Million to Build Blue Hill Ave. Busway - mass.streetsblog.org/2026/03/05/c...

05.03.2026 23:05 πŸ‘ 52 πŸ” 16 πŸ’¬ 2 πŸ“Œ 9
graphic showing normal signal cycle, where a streetcar/tram gets stuck at a red light, versus one with phase rotation, where a streetcar/tram is detected, and given a green automatically.

graphic showing normal signal cycle, where a streetcar/tram gets stuck at a red light, versus one with phase rotation, where a streetcar/tram is detected, and given a green automatically.

With phase rotation, however, the left turn phase can either come before (leading) or after (lagging) depending on estimated streetcar arrivals.

This *significantly* reduces delays for transit riders!

02.03.2026 00:04 πŸ‘ 16 πŸ” 3 πŸ’¬ 1 πŸ“Œ 0
Curbs in the snow cleared separated bike lane

Curbs in the snow cleared separated bike lane

@streets.boston.gov please remove the pre cast curbs from the mass ave bike lane across from clear way street. This is a major safety hazard for all road users and someone will be hurt.

27.02.2026 21:43 πŸ‘ 5 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

This is true

23.02.2026 14:44 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

I honestly find it’s the older cars that have the problem more. I think folks without LEDs feel like their lights aren’t bright enough so they put on high beams to compensate.

23.02.2026 14:43 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Anyone else noticing a lot more people driving with their high beams on all the time?

22.02.2026 20:22 πŸ‘ 8 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0

I hate being in Ubers because in my experience they always turn on red illegally or break other laws. Please just obey the law? I just want to get to my destination safely…

15.02.2026 16:49 πŸ‘ 7 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Same

15.02.2026 15:33 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Yeah I’ve heard !

13.02.2026 02:45 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Damn the flu is crazy. Anyone else hit? I got vaxxed too ):

13.02.2026 01:11 πŸ‘ 3 πŸ” 0 πŸ’¬ 2 πŸ“Œ 0
Post image

🚲 The 2025 Biking in Cambridge Data Report is here, and the numbers show record biking and imaproved safety across the city. Explore the full report to dive deeper into the data and see what it means for the future of transportation in Cambridge: https://camb.ma/3ZxX8P8

11.02.2026 18:36 πŸ‘ 28 πŸ” 11 πŸ’¬ 0 πŸ“Œ 7
Preview
Traffic Analysis Shows Newton Bikeway Project Reduced Car Traffic, Speeding, and Crashes - Streetsblog Massachusetts "Vehicle volumes on the corridor have decreased without evidence of cut throughs on local roads, speeds within the pilot area have reduced, and bicycle activity has increased," according to a City of ...

Traffic Analysis Shows #NewtonMA Washington Street Bikeway Project Reduced Car Traffic, Speeding, and Crashes -

mass.streetsblog.org/2026/02/10/t...

10.02.2026 21:16 πŸ‘ 48 πŸ” 24 πŸ’¬ 0 πŸ“Œ 1
Preview
Traffic Enforcement Camera Bills Pick Up Speed on Beacon Hill - Streetsblog Massachusetts "We've seen a clear shift in driver behavior. Drivers are more aggressive, and there are more vehicles on the road," warns a Worcester police sergeant.

Traffic Enforcement Camera Bills Pick Up Speed on Beacon Hill #mapoli - mass.streetsblog.org/2026/02/05/t...

06.02.2026 12:42 πŸ‘ 22 πŸ” 4 πŸ’¬ 2 πŸ“Œ 1

Chickened out both days. Miss it though ):

21.01.2026 13:44 πŸ‘ 1 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

That snow topped NTOR sign is 🀌

20.01.2026 23:19 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Thanks!

17.01.2026 01:50 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Me in a high vis jacket working at a traffic signal cabinet in Cambridge, MA

Me in a high vis jacket working at a traffic signal cabinet in Cambridge, MA

I love my new job !

16.01.2026 22:24 πŸ‘ 46 πŸ” 1 πŸ’¬ 6 πŸ“Œ 0

Yes I believe so

15.01.2026 02:40 πŸ‘ 0 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
Inman square traffic signal

Inman square traffic signal

What a gorgeous signal.

15.01.2026 01:17 πŸ‘ 11 πŸ” 1 πŸ’¬ 2 πŸ“Œ 0
Preview
US Traffic Safety Is Getting Worse, While Other Countries Improve The rising rate of road deaths in the US continues to defy global trends. Here’s what traffic planners in other nations could teach their American counterparts.

Actual causes of the US road safety crisis:
πŸ”Ή Car bloat
πŸ”Ή Failure to enforce traffic laws
πŸ”Ή Fast urban roads
πŸ”Ή Suburbanization of poverty/jobs

Blaming smartphones is lazy thinking.

11.01.2026 14:49 πŸ‘ 119 πŸ” 21 πŸ’¬ 10 πŸ“Œ 4

Come! Talk with me and other staff about this project on Wednesday evening!

05.01.2026 18:37 πŸ‘ 5 πŸ” 4 πŸ’¬ 0 πŸ“Œ 0

Arlington is really working to reduce speeding on Lake street.

βœ… Speed limit is now 25 instead of 30
βœ… 25 MPH reminder signs installed
βœ… Signal at Minuteman now has pedestrian recall for the trail so the signal gives vehicles red more often (and provides less delay for trail users)

04.01.2026 02:42 πŸ‘ 5 πŸ” 1 πŸ’¬ 1 πŸ“Œ 0

I’m mixed on those. I see the benefit I suppose but at that point you should just provide a protected pedestrian crossing

04.01.2026 01:58 πŸ‘ 2 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

True. Hate the salt makes it so hard to read pavement markings

03.01.2026 21:47 πŸ‘ 2 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0
RRFB activated with a light flashing on a crosswalk. Photo taken in the dark, but thanks to the illumination from the device the crosswalk is lit.

RRFB activated with a light flashing on a crosswalk. Photo taken in the dark, but thanks to the illumination from the device the crosswalk is lit.

Loving Arlington’s newest RRFB crosswalks that come with this white light that illuminates the crosswalk and pedestrian when the button is pressed. Makes the crossing so much more visible!

03.01.2026 21:00 πŸ‘ 6 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

Totally agree. Something I’ve prioritized in designing signals is adding that in when we can’t make protected crossings. Expect more this year (:

03.01.2026 04:49 πŸ‘ 1 πŸ” 0 πŸ’¬ 0 πŸ“Œ 0

Maybe a study at a signal first with base line turn on red. Then a red arrow. Then just a no turn on red sign. Then a red arrow and sign. I’m guessing in that order compliance will increase, but maybe not? And maybe by varying values. Something I’ll be thinking about more in 2026!

03.01.2026 02:00 πŸ‘ 4 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0

I’m curious about this and maybe will look into this for future projects. Red arrows communicating no turn on red may have some advantages and could be useful at signals where no turn on red compliance is especially poor. Would love to study this further.

03.01.2026 02:00 πŸ‘ 3 πŸ” 0 πŸ’¬ 1 πŸ“Œ 0
Traffic signal approach to tee with β€œNO TURN ON RED” marked.

Traffic signal approach to tee with β€œNO TURN ON RED” marked.

Traffic signal with right turn signal red arrow but no no turn on red

Traffic signal with right turn signal red arrow but no no turn on red

Witnessing a funny phenomenon on Hammond Pond Parkway today.

I saw more or the same level of drivers wait at this red arrow without a No Turn on Red sign as I did see wait for the no turn on red sign.

There’s something psychological about a red arrow that is stronger than a sign.

03.01.2026 02:00 πŸ‘ 11 πŸ” 1 πŸ’¬ 3 πŸ“Œ 0