New speed limit signs were introduced in Dubai Marina to deter reckless e-scooter and bike riders.
Yellow stickers were placed along the eight-kilometre Marina Walk loop at the weekend telling riders to slow down.
Two-wheelers were already restricted to 12 kilometres per hour but the limits are often ignored or riders plead ignorance, residents said.
E-scooters have become popular in the past year and some can reach 25kph or more.
Security guards regularly patrol the marina but do not tend to challenge riders.
Paul Young, who lives in Jumeirah Beach Residence, two streets away from Marina Walk, said pedestrians were keen for riders to slow down.
“They’re definitely a hazard,” said Mr Young, an energy manager from the UK.
“I’m in favour of the speed limit for scooters, they’ve become a real menace in residential areas.
“I would like to see them banned altogether in JBR as they are just not compatible in communities where there are lots of children.
“They go way too fast and you just don’t see or hear them coming."
E-scooter are on the rise and are particularly popular in the Marina and Downtown Dubai, where traffic and one-way systems can make short taxi journeys inconvenient.
Models such as the Chinese-made Segway Ninebot are limited to 17kph, but software can be installed to increase the speed towards 30kph.
The company makes about 90 per cent of the e-scooters in use in the US and the two-wheelers cost from Dh1,400.
The Xiaomi M365 Pro, which is sold on Noon and Amazon for about the same price, can reach 26kph without any modification.
Cyclists must wear helmets by law, though they are not compulsory for e-scooter riders and are rarely seen being worn.
As the electric rides have become more popular, doctors reported an increase in related injuries.
A recent US study reported close to 40,000 broken bones, head injuries, cuts and bruises resulting from scooter accidents.
The study on accidents in the US published in the Journal of the American Medical Association revealed the number of injuries trebled between 2014 and 2018.