Alexandre, who asked AFP that his surname be withheld, was among the crowd that massed on Nice's stately palm-lined Promenade des Anglais for the spectacular Bastille Day fireworks display last Thursday.
"I came across the truck as I was leaving the fireworks on my bike," he told AFP.
"At one point I told myself I would cross the promenade to take the bicycle path along by the sea to go faster.
Mohamed Lahouaiej Bouhlel, also 31, had already left a trail of devastation, zigzagging down the street at speed to try crush as many people as possible with his 19-tonne refrigerated vehicle.
Alexandre caught onto the handle of the cab door on the driver's side to try to stop him.
The Tunisian father-of-three at the wheel clapped eyes on him and then began searching for something in the truck.
"It was his gun he was looking for," Alexandre said.
Grabbing a hold of his pistol Bouhlel pointed it at the young crane driver, who promptly let go of the handle.
At that moment he felt a motorbike brush past him as the other hero of the night, whose identity is still unknown, entered the fray.
The motorcyclist chased the truck and also tried to open the driver's door to overpower Bouhlel but fell off and ended up under the wheels, according to a German journalist who filmed the events on his phone.
It is not known whether the motorcyclist survived.
Bouhlel, a delivery driver by profession, looked to be "in full control of his vehicle" as he careened down the street, Alexandre said.
By the time police deployed to guard the July 14 festivities had caught up with him and shot him dead, Bouhlel had crushed 84 people to death, including around a dozen children, and injured around 300 others.
Tens of thousands of people marked a minute's silence for the victims on the seaside promenade yesterday.
You’ve reached your limit of {{free_limit}} free articles this month.
Subscribe now for unlimited access.
Already subscribed? Log in
Subscribe to read the full story →
Smart Quarterly
₹900
3 Months
₹300/Month
Smart Essential
₹2,700
1 Year
₹225/Month
Super Saver
₹3,900
2 Years
₹162/Month
Renews automatically, cancel anytime
Here’s what’s included in our digital subscription plans
Exclusive premium stories online
Over 30 premium stories daily, handpicked by our editors


Complimentary Access to The New York Times
News, Games, Cooking, Audio, Wirecutter & The Athletic
Business Standard Epaper
Digital replica of our daily newspaper — with options to read, save, and share


Curated Newsletters
Insights on markets, finance, politics, tech, and more delivered to your inbox
Market Analysis & Investment Insights
In-depth market analysis & insights with access to The Smart Investor


Archives
Repository of articles and publications dating back to 1997
Ad-free Reading
Uninterrupted reading experience with no advertisements


Seamless Access Across All Devices
Access Business Standard across devices — mobile, tablet, or PC, via web or app
